Question

Phân tích đa thức thành nhân tử

4(2-x)²+xy-2y

Answer 1

4(2-x)²+xy-2y = 4(x-2)²+y(x-2)=(x-2)(4x-8+y)

Answer 2

\(4\left(2-x\right)^2+xy-2y=4\left(x-2\right)^2+y\left(x-2\right)\)

\(=\left(x-2\right)\left(4\left(x-2\right)+y\right)\)

\(=\left(x-2\right)\left(4x+y-8\right)\)

Answer 3

Ta có: \(4\left(x-2\right)^2+xy-2y\)

\(=4\left(x-2\right)^2+y\left(x-2\right)\)

\(=\left(x-2\right)\left(4x-8+y\right)\)