{"id":18390,"date":"2026-05-03T04:27:46","date_gmt":"2026-05-02T22:27:46","guid":{"rendered":"https:\/\/mcqacademy.com\/en\/mcq\/radical-equation-exact-solution-20\/"},"modified":"2026-05-03T04:27:46","modified_gmt":"2026-05-02T22:27:46","slug":"radical-equation-exact-solution-20","status":"publish","type":"mcq","link":"https:\/\/mcqacademy.com\/en\/mcq\/radical-equation-exact-solution-20\/","title":{"rendered":"Radical Equation Exact Solution 20"},"content":{"rendered":"<p>Solve \u221a(x + 5) = 7.<\/p>\n\n<ul class=\"quiz-options wp-block-list\">\n<li>54<\/li>\n<li>2<\/li>\n<li>44<\/li>\n<li>-44<\/li>\n<\/ul>\n","protected":false},"author":39,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","topic":[2705],"subject":[1425],"education_level":[1896],"class_list":["post-18390","mcq","type-mcq","status-publish","hentry","topic-algebra","subject-mathematics","education_level-hsc"],"mcq_note":"Start by remembering that the square root symbol gives the non-negative root. The equation says that \u221a(x + 5) is 7. To remove the square root, square both sides: x + 5 = 7\u00b2 = 49. Now isolate x by moving the constant to the other side, so x = 49 - 5 = 44. Always check radical equations: substituting x = 44 makes the expression inside the root equal to 49, and \u221a49 = 7. So the correct answer is 44.","mcq_options":[{"right":"no","answer":"54"},{"right":"no","answer":"2"},{"right":"yes","answer":"44"},{"right":"no","answer":"-44"}],"multi_answers":"no","subject_terms":[{"id":1425,"title":"Mathematics","slug":"mathematics"}],"topic_terms":[{"id":2705,"title":"Algebra","slug":"algebra"}],"_links":{"self":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/mcq\/18390","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/mcq"}],"about":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/types\/mcq"}],"author":[{"embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/users\/39"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/comments?post=18390"}],"wp:attachment":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/media?parent=18390"}],"wp:term":[{"taxonomy":"topic","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/topic?post=18390"},{"taxonomy":"subject","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/subject?post=18390"},{"taxonomy":"education_level","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/education_level?post=18390"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}