InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Factorise (5a +3b)² - 3(5a +3b) -28 |
| Answer» <html><body><p>n:- factors >>> (5a+<a href="https://interviewquestions.tuteehub.com/tag/3b-310586" style="font-weight:bold;" target="_blank" title="Click to know more about 3B">3B</a>-7)(5a+3b+4)Expln:-f(5a+3b) = (5a +3b)² - 3(5a +3b) -28Let x = 5a+3b -- (<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>) f(x) = x²-3x-28By middle <a href="https://interviewquestions.tuteehub.com/tag/term-1241851" style="font-weight:bold;" target="_blank" title="Click to know more about TERM">TERM</a> splitting, f(x) = x²-7x+4x-28 = x(x-7)+4(x-7) = (x-7)(x+4)By(1), factors are (5a+3b-7)(5a+3b+4)</p></body></html> | |