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| 1. |
Which type of identity is (2a+7)(2a-7) |
| Answer» <html><body><p>(a+<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a>)(a-b) = a^<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a> - b^2Step-by-step <a href="https://interviewquestions.tuteehub.com/tag/explanation-455162" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLANATION">EXPLANATION</a>:(2a+7) (2a-7)(a + b) (a - b), where a = 2a, b = 7(a+b)(a-b) = a^2 - b^2(2a+7) (2a-7) = (2a)^2 - (7)^2 = 4a^2 - 49</p></body></html> | |