Question

a)  x^3-x^2-12x

b)  x^2+7x 

ai giúp tui với ạ 

cảm ơn trươc ạ

Answer 1

\(a,=x\left(x^2-x-12\right)=x\left(x^2-4x+3x-12\right)\\ =x\left(x-4\right)\left(x+3\right)\\ b,=x\left(x+7\right)\)

Answer 2

a) \(x^3-x^2-12x=x\left(x^2-x-12\right)=x\left(x-4\right)\left(x+3\right)\)

b) \(x^2+7x=x\left(x+7\right)\)