Question

Answer 1

a: =x^2(2x-1)-4(2x-1)

=(2x-1)(x-2)(x+2)

b: \(=\left(2x+y\right)^2-16x^2y^2=\left(2x+y-4xy\right)\cdot\left(2x+y+4xy\right)\)

c: \(=x\left(x-4\right)\left(x+4\right)-15x\left(x-4\right)\)

\(=\left(x-4\right)\left(x^2+4x-15x\right)\)

\(=x\left(x-11\right)\left(x-4\right)\)

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

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