Question

factorazion of A x2 +5x2-36​

Answer 1

Question:-

$\rightarrow factorazion \: of \: x^2 +5x2-36$

Answer:-

$= {4x}^{2} + 20x - 144$

$= ( {2x})^{2} + 2(2x)(5) - 144$

$= (2x + 5) ^{2} - 25 - 144$

$= (2x - 5) ^{2} - {13}^{2}$

$= (2x - 8)(2x + 18)$

$= (2(x - 4)(2(x + 9))$

$= 4(x - 4)(x + 9)$

Therefore,

$\leadsto x^2+5x-36 = (x-4) (x+9)$