Question

factorise x square - 45 X + 324

Answer 1

$hey \: mate \: here \: is \: your \: answer...$
$x {}^{2} - 45x + 324$
$x {}^{2} - (36 + 9)x + 324$
$x {}^{2} - 36x - 9x + 324$
$x(x - 36) - 9(x - 36)$
$(x - 9)(x - 36)$
$hope \: it \: helps........$