\u7edd\u5bf9\u503c\u6307\u7684\u662f\u4e00\u4e2a\u6570\u5728\u6570\u8f74\u4e0a\u6240\u5bf9\u5e94\u70b9\u5230\u539f\u70b9\u7684\u8ddd\u79bb\uff0c\u7edd\u5bf9\u503c\u7684\u6982\u5ff5\u4e0e\u5404\u79cd\u6570\u5b66\u548c\u7269\u7406\u73af\u5883\u4e2d\u7684\u5927\u5c0f\u3001\u8ddd\u79bb\u548c\u8303\u6570\u7684\u6982\u5ff5\u5bc6\u5207\u76f8\u5173\uff1a\u8d1f\u6570\u7684\u7edd\u5bf9\u503c\u662f\u5b83\u7684\u76f8\u53cd\u6570\uff1b\u96f6\u7684\u7edd\u5bf9\u503c\u662f\u96f6\uff1b\u6b63\u6570\u7684\u7edd\u5bf9\u503c\u662f\u5b83\u672c\u8eab\u3002<\/p>\n
\u7edd\u5bf9\u503c\u5c0f\u4e8e3\u7684\u6574\u6570<\/p>\n
\u7edd\u5bf9\u503c\u5c0f\u4e8e3\u7684\u6574\u6570\u662f\uff082\uff0c1\uff0c0\uff0c-1\uff0c-2\uff09\uff0c\u5176\u4e2d\uff08-2\uff09\u6700\u5c0f\uff0c\uff080\uff0c1\uff0c2\uff09\u662f\u975e\u8d1f\u6570\uff0c\uff080\uff09\u7684\u7edd\u5bf9\u503c\u6700\u5c0f\u3002<\/p>\n
\u975e\u6b63\u6574\u6570\u662f\uff1a-3\u3001-2\u3001-1\u30010\u3002\u7edd\u5bf9\u503c\u5c0f\u4e8e3\u7684\u6240\u6709\u6574\u6570\uff0c\u5c31\u662f\u5728\u6570\u8f74\u4e0a\u5230\u539f\u70b9\u7684\u8ddd\u79bb\u5c0f\u4e8e3\u4e2a\u5355\u4f4d\u957f\u5ea6\u7684\u6574\u6570\uff0c\u518d\u627e\u51fa\u975e\u6b63\u6574\u6570\u3002<\/p>\n
\u7edd\u5bf9\u503c\u6700\u5927\u503c\u548c\u6700\u5c0f\u503c\u89c4\u5f8b<\/p>\n
\u7edd\u5bf9\u503c\u662f\u4e00\u4e2a\u975e\u8d1f\u6570\uff0c\u6240\u4ee5\u7edd\u5bf9\u503c\u51fd\u6570\u7684\u6700\u5927\u503c\u548c\u6700\u5c0f\u503c\u90fd\u662f0\uff0c\u5b83\u5728\u8868\u793a\u8ddd\u79bb\u3001\u5dee\u503c\u548c\u5927\u5c0f\u6bd4\u8f83\u7b49\u65b9\u9762\u6709\u7740\u91cd\u8981\u7684\u5e94\u7528\u3002<\/p>\n
\u7edd\u5bf9\u503c\u7684\u6027\u8d28\u4e2d\u6709\u4e00\u4e2a\u91cd\u8981\u7684\u7279\u70b9\uff0c\u5c31\u662f\u5b83\u7684\u6700\u5927\u503c\u548c\u6700\u5c0f\u503c\u90fd\u662f0\u3002\u8fd9\u662f\u56e0\u4e3a\u7edd\u5bf9\u503c\u8868\u793a\u7684\u662f\u8ddd\u79bb\uff0c\u800c\u8ddd\u79bb\u4e0d\u80fd\u4e3a\u8d1f\u6570\uff0c\u6240\u4ee5\u7edd\u5bf9\u503c\u7684\u53d6\u503c\u8303\u56f4\u662f\u5927\u4e8e\u7b49\u4e8e0\u7684\u5b9e\u6570\u3002<\/p>\n
\u5982\uff1a+5\uff0c-21\uff0c\u5b83\u4eec\u7684\u7edd\u5bf9\u503c\u5206\u522b\u662f5\u548c21\u3002\u6240\u4ee5+5\uff0c-21\u7684\u7edd\u5bf9\u503c\uff0c\u6700\u5927\u662f21\uff0c\u6700\u5c0f\u662f5\u3002<\/p>\n
\u5728\u6570\u5b66\u4e2d\uff0c\u7edd\u5bf9\u503c\u51fd\u6570\u901a\u5e38\u7528\u7b26\u53f7\u201c|x|\u201d\u6765\u8868\u793a\u3002\u5bf9\u4e8e\u4efb\u610f\u5b9e\u6570x\uff0c\u5176\u7edd\u5bf9\u503c\u7684\u8ba1\u7b97\u65b9\u6cd5\u662f\u5c06x\u7684\u7b26\u53f7\u53bb\u6389\uff0c\u5f97\u5230\u4e00\u4e2a\u975e\u8d1f\u6570\u3002\u4f8b\u5982\uff0c|3|=3\uff0c|-5|=5\uff0c|0|=0\u3002\u53ef\u4ee5\u770b\u51fa\uff0c\u7edd\u5bf9\u503c\u51fd\u6570\u7684\u6700\u5927\u503c\u548c\u6700\u5c0f\u503c\u90fd\u662f0\uff0c\u56e0\u4e3a0\u5230\u4efb\u610f\u5b9e\u6570\u7684\u8ddd\u79bb\u90fd\u662f0\u3002<\/p>\n
\u7edd\u5bf9\u503c\u51fd\u6570\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u6709\u5f88\u591a\u91cd\u8981\u7684\u4f5c\u7528\u3002\u9996\u5148\uff0c\u5b83\u53ef\u4ee5\u7528\u6765\u8868\u793a\u8ddd\u79bb\u3002\u4f8b\u5982\uff0c\u5728\u5750\u6807\u7cfb\u4e2d\uff0c\u70b9A\uff082,3\uff09\u548cB\uff08-1,5\uff09\u4e4b\u95f4\u7684\u8ddd\u79bb\u53ef\u4ee5\u7528\u7edd\u5bf9\u503c\u51fd\u6570\u6765\u8ba1\u7b97\u3002\u70b9A\u5230\u70b9B\u7684\u6a2a\u5750\u6807\u7684\u5dee\u503c\u662f2-\uff08-1\uff09=3\uff0c\u7eb5\u5750\u6807\u7684\u5dee\u503c\u662f3-5=-2\uff0c\u6240\u4ee5\u70b9A\u5230\u70b9B\u7684\u8ddd\u79bb\u53ef\u4ee5\u8868\u793a\u4e3a|3|+|-2|=3+2=5\u3002<\/p>\n
\u7edd\u5bf9\u503c\u51fd\u6570\u8fd8\u53ef\u4ee5\u7528\u6765\u8868\u793a\u5dee\u503c\u3002\u4f8b\u5982\uff0c\u5728\u7edf\u8ba1\u5b66\u4e2d\uff0c\u7edd\u5bf9\u503c\u51fd\u6570\u5e38\u7528\u4e8e\u8ba1\u7b97\u89c2\u6d4b\u503c\u4e0e\u5747\u503c\u4e4b\u95f4\u7684\u504f\u5dee\u3002\u5047\u8bbe\u6709\u4e00\u7ec4\u89c2\u6d4b\u503c\uff081\uff0c2\uff0c3\uff0c4\uff0c5\uff09\uff0c\u5b83\u4eec\u7684\u5e73\u5747\u503c\u662f\uff081+2+3+4+5\uff09\/5=3\u3002\u5982\u679c\u6211\u4eec\u60f3\u8981\u8ba1\u7b97\u6bcf\u4e2a\u89c2\u6d4b\u503c\u4e0e\u5747\u503c\u4e4b\u95f4\u7684\u504f\u5dee\uff0c\u53ef\u4ee5\u4f7f\u7528\u7edd\u5bf9\u503c\u51fd\u6570\u3002<\/p>\n
\u89c2\u6d4b\u503c1\u4e0e\u5747\u503c3\u4e4b\u95f4\u7684\u504f\u5dee\u662f|1-3|=2\uff0c\u89c2\u6d4b\u503c2\u4e0e\u5747\u503c3\u4e4b\u95f4\u7684\u504f\u5dee\u662f|2-3|=1\uff0c\u4ee5\u6b64\u7c7b\u63a8\u3002\u901a\u8fc7\u8ba1\u7b97\u6bcf\u4e2a\u89c2\u6d4b\u503c\u4e0e\u5747\u503c\u4e4b\u95f4\u7684\u7edd\u5bf9\u503c\u5dee\uff0c\u6211\u4eec\u53ef\u4ee5\u5f97\u5230\u4e00\u7ec4\u975e\u8d1f\u6570\uff0c\u7528\u6765\u8868\u793a\u6bcf\u4e2a\u89c2\u6d4b\u503c\u4e0e\u5747\u503c\u4e4b\u95f4\u7684\u504f\u5dee\u5927\u5c0f\u3002<\/p>\n
\u7edd\u5bf9\u503c\u516b\u5927\u7ecf\u5178\u9898\u578b<\/p>\n
1.\u8ba1\u7b97\u7edd\u5bf9\u503c\uff1a\u6c42\u51fa\u7ed9\u5b9a\u6570\u7684\u7edd\u5bf9\u503c\uff0c\u4f8b\u5982|3|=3\uff0c|-4|=4\u3002<\/p>\n
2.\u6c42\u76f8\u53cd\u6570\uff1a\u6c42\u4e0e\u7ed9\u5b9a\u6570\u7edd\u5bf9\u503c\u76f8\u7b49\uff0c\u4f46\u7b26\u53f7\u76f8\u53cd\u7684\u6570\uff0c\u4f8b\u5982-|2|=-2\uff0c|5|=-\uff08-5\uff09\u3002<\/p>\n
3.\u6bd4\u8f83\u5927\u5c0f\uff1a\u6bd4\u8f83\u4e24\u4e2a\u6709\u7edd\u5bf9\u503c\u7684\u6570\u7684\u5927\u5c0f\u5173\u7cfb\uff0c\u4f8b\u5982\u6bd4\u8f83|2|\u548c|5|\u7684\u5927\u5c0f\u5173\u7cfb\uff0c\u9700\u8981\u5c06\u5b83\u4eec\u5206\u522b\u5316\u7b80\u4e3a\u6b63\u6574\u65702\u548c5\uff0c\u518d\u8fdb\u884c\u6bd4\u8f83\u3002<\/p>\n
4.\u89e3\u7edd\u5bf9\u503c\u65b9\u7a0b\uff1a\u89e3\u65b9\u7a0b\u4e2d\u5305\u542b\u7edd\u5bf9\u503c\u7684\u65b9\u7a0b\uff0c\u4f8b\u5982|x|=3\uff0c\u9700\u8981\u6839\u636e\u7edd\u5bf9\u503c\u7684\u5b9a\u4e49\uff0c\u8003\u8651x=3\u548cx=-3\u4e24\u79cd\u60c5\u51b5\uff0c\u5e76\u5206\u522b\u6c42\u89e3\u3002<\/p>\n
5.\u89e3\u7edd\u5bf9\u503c\u4e0d\u7b49\u5f0f\uff1a\u89e3\u4e0d\u7b49\u5f0f\u4e2d\u5305\u542b\u7edd\u5bf9\u503c\u7684\u65b9\u7a0b\uff0c\u4f8b\u5982|x|>3\uff0c\u9700\u8981\u8003\u8651x>3\u548cx<-3\u4e24\u79cd\u60c5\u51b5\uff0c\u5e76\u53d6\u5b83\u4eec\u7684\u5e76\u96c6\u3002<\/p>\n
6.\u7edd\u5bf9\u503c\u4ee3\u6570\u5f0f\u7684\u5316\u7b80\uff1a\u5316\u7b80\u7ed9\u5b9a\u7684\u7edd\u5bf9\u503c\u4ee3\u6570\u5f0f\uff0c\u4f8b\u5982|-x+3|+|x-5|\uff0c\u9700\u8981\u5206\u60c5\u51b5\u8ba8\u8bbax<3\uff0c3\u2264x\u22645\uff0c\u548cx>5\u4e09\u79cd\u60c5\u51b5\uff0c\u5e76\u5206\u522b\u5316\u7b80\u7edd\u5bf9\u503c\u3002<\/p>\n
7.\u7edd\u5bf9\u503c\u548c\u7684\u6c42\u6700\u5c0f\u503c\uff1a\u7ed9\u5b9a\u4e24\u4e2a\u6570\u7684\u7edd\u5bf9\u503c\uff0c\u6c42\u8fd9\u4e24\u4e2a\u7edd\u5bf9\u503c\u7684\u548c\u7684\u6700\u5c0f\u503c\uff0c\u4f8b\u5982|x-3|+|x+2|\uff0c\u9700\u8981\u8fdb\u884c\u5206\u7c7b\u8ba8\u8bbax<-2\uff0c-2\u2264x\u22643\uff0c\u548cx>3\u4e09\u79cd\u60c5\u51b5\uff0c\u5e76\u5206\u522b\u6c42\u51fa\u6bcf\u4e2a\u7edd\u5bf9\u503c\u7684\u6700\u5c0f\u503c\uff0c\u518d\u5c06\u5b83\u4eec\u76f8\u52a0\u3002<\/p>\n
8.\u7edd\u5bf9\u503c\u5dee\u7684\u6c42\u6700\u5927\u503c\uff1a\u7ed9\u5b9a\u4e24\u4e2a\u6570\u7684\u7edd\u5bf9\u503c\uff0c\u6c42\u8fd9\u4e24\u4e2a\u7edd\u5bf9\u503c\u7684\u5dee\u7684\u6700\u5927\u503c\uff0c\u4f8b\u5982|x-2|-|x+3|\uff0c\u540c\u6837\u9700\u8981\u5206\u7c7b\u8ba8\u8bbax<-3\uff0c-3\u2264x\u22642\uff0c\u548cx>2\u4e09\u79cd\u60c5\u51b5\uff0c\u5e76\u5206\u522b\u6c42\u51fa\u6bcf\u4e2a\u7edd\u5bf9\u503c\u7684\u6700\u5927\u503c\uff0c\u518d\u6c42\u51fa\u5b83\u4eec\u7684\u5dee\u7684\u6700\u5927\u503c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u7edd\u5bf9\u503c\u6307\u7684\u662f\u4e00\u4e2a\u6570\u5728\u6570\u8f74\u4e0a\u6240\u5bf9\u5e94\u70b9\u5230\u539f\u70b9\u7684\u8ddd\u79bb\uff0c\u7edd\u5bf9\u503c\u7684\u6982\u5ff5\u4e0e\u5404\u79cd\u6570\u5b66\u548c\u7269\u7406\u73af\u5883\u4e2d\u7684\u5927\u5c0f\u3001\u8ddd\u79bb\u548c\u8303\u6570\u7684\u6982\u5ff5\u5bc6\u5207 … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-577","post","type-post","status-publish","format-standard","hentry","category-shuxue"],"_links":{"self":[{"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/posts\/577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/comments?post=577"}],"version-history":[{"count":1,"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/posts\/577\/revisions"}],"predecessor-version":[{"id":578,"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/posts\/577\/revisions\/578"}],"wp:attachment":[{"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/media?parent=577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/categories?post=577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/tags?post=577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}