Question

Answer 1

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

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

d: \(=x^3\left(x-1\right)-\left(x-1\right)\left(x+1\right)\)

\(=\left(x-1\right)\left(x^3-x-1\right)\)

Answer 2

f)x³-y³-x+y

=(x³-y³)-(x-y)

=(x-y).(x²+xy+y²)-(x-y)

=(x-y).(x²+xy+y²-1)