Question

Answer 1

Bài 1: 

a: =4(x-y)(x+y)

b: \(=x\left(x-y\right)+2\left(x-y\right)=\left(x-y\right)\left(x+2\right)\)

d: \(=6x^2-3x-4x+2\)

\(=3x\left(2x-1\right)-2\left(2x-1\right)=\left(2x-1\right)\left(3x-2\right)\)