Question

Answer 1

a: \(=\left(3x-5\right)\left(3x+5\right)-4y\left(3x+5\right)\)

\(=\left(3x+5\right)\left(3x-5-4y\right)\)

b: \(=x\left(y^2-49x^2-28x-4\right)\)

\(=x\left[y^2-\left(7x+2\right)^2\right]\)

\(=x\left(y-7x-2\right)\left(y+7x+2\right)\)

c: \(=x^2-2022x+2019x-2019\cdot2022\)

=(x-2022)(x+2019)

d: \(=\left(x^2+x\right)^2+6\left(x^2+x\right)-16\)

\(=\left(x^2+x+8\right)\left(x^2+x-2\right)\)

\(=\left(x+2\right)\left(x-1\right)\left(x^2+x+8\right)\)