Question

X^2-3x-18 in simplest form

Answer 1

$= x ^{2} - 3x - 18 \\ =x ^{2} - (6 - 3)x - 18 \\ = x ^{2} - 6x + 3x - 18 \\ = x(x - 6) + 3(x - 6) \\ = (x - 6)(x + 3)$