Question

giúp mình với ạ

Answer 1

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

Answer 2

b) \(=5x\left(3-2x\right)+7\left(3-2x\right)\)
    \(=\left(3-2x\right)\left(5x-7\right)\)
c) \(=\left(x-3\right)^2-y^2\)
    \(=\left(x-3-y\right)\left(x-3+y\right)\)

Answer 3

b: \(=\left(3-2x\right)\left(5x+7\right)\)