{"id":2651,"date":"2026-05-18T21:14:02","date_gmt":"2026-05-18T21:14:02","guid":{"rendered":"https:\/\/mcqacademy.com\/zh\/mcq\/find-quadratic-parameter-from-roots-20\/"},"modified":"2026-05-18T21:14:02","modified_gmt":"2026-05-18T21:14:02","slug":"find-quadratic-parameter-from-roots-20","status":"publish","type":"mcq","link":"https:\/\/mcqacademy.com\/zh\/mcq\/find-quadratic-parameter-from-roots-20\/","title":{"rendered":"\u7531\u6839\u6c42\u4e8c\u6b21\u65b9\u7a0b\u53c2\u6570 20"},"content":{"rendered":"<p>\u4e8c\u6b21\u65b9\u7a0b x^2 + px + -4 = 0 \u7684\u4e24\u4e2a\u6839\u662f -2 \u548c 2\u3002\u6c42 p\u3002<\/p>\n\n<ul class=\"quiz-options wp-block-list\">\n<li>-4<\/li>\n<li>0<\/li>\n<li>4<\/li>\n<\/ul>\n","protected":false},"author":39,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","topic":[1079,1129],"subject":[1080],"education_level":[5],"class_list":["post-2651","mcq","type-mcq","status-publish","hentry","topic-algebra","topic-vietas-formula","subject-algebra","education_level-hsc"],"mcq_note":"\u4f7f\u7528\u97e6\u8fbe\u5b9a\u7406\u3002\u5bf9\u4e8e x\u00b2 + px + q = 0\uff0c\u4e24\u4e2a\u6839\u7684\u548c\u7b49\u4e8e -p\uff0c\u4e24\u4e2a\u6839\u7684\u79ef\u7b49\u4e8e q\u3002\u5df2\u77e5\u6839\u4e3a -2 \u548c 2\uff0c\u5b83\u4eec\u7684\u548c\u662f -2 + 2 = 0\u3002\u56e0\u4e3a\u6839\u7684\u548c = -p\uff0c\u6240\u4ee5 -p = 0\uff0c\u4ece\u800c p = 0\u3002\u540c\u65f6\uff0c\u4e58\u79ef -2\u00d72 = -4 \u4e0e\u5e38\u6570\u9879 -4 \u76f8\u7b26\uff0c\u8bf4\u660e\u7ed9\u51fa\u7684\u6839\u662f\u4e00\u81f4\u7684\u3002\u56e0\u6b64\u6b63\u786e\u7b54\u6848\u662f 0\u3002","mcq_options":[{"right":"no","answer":"-4"},{"right":"yes","answer":"0"},{"right":"no","answer":"4"}],"multi_answers":"no","subject_terms":[{"id":1080,"title":"Algebra","slug":"algebra"}],"topic_terms":[{"id":1079,"title":"Algebra","slug":"algebra"},{"id":1129,"title":"Vieta's Formula","slug":"vietas-formula"}],"_links":{"self":[{"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/mcq\/2651","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/mcq"}],"about":[{"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/types\/mcq"}],"author":[{"embeddable":true,"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/users\/39"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/comments?post=2651"}],"wp:attachment":[{"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/media?parent=2651"}],"wp:term":[{"taxonomy":"topic","embeddable":true,"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/topic?post=2651"},{"taxonomy":"subject","embeddable":true,"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/subject?post=2651"},{"taxonomy":"education_level","embeddable":true,"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/education_level?post=2651"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}