Question

1) x^2-4xy-x+3y^2+3y

2) 6x^2+xy -7x-2y^2+7y-5

3) 2a^2+5ab-3b^2-7b-2

4) 6x^2-xy-2y^2+3x-2y

5) 2x^2 - 3xy-4x-9y^2-6y

Giúp mk với mk đang cần gấp

Answer 1

1: \(=\left(x-3y\right)\left(x-y\right)-\left(x-3y\right)=\left(x-3y\right)\left(x-y-1\right)\)

4: \(=6x^2-4xy+3xy-2y^2+3x-2y\)

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