Question

Answer 1

a) \(=x\left(x+5\right)-\left(x+5\right)=\left(x+5\right)\left(x-1\right)\)

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

c) \(=x\left(x-5\right)\)

d) \(=\left(x+3y-3y\right)\left(x+3y+3y\right)=x\left(x+6y\right)\)

e) \(=x\left(x+y\right)-3\left(x+y\right)=\left(x+y\right)\left(x-3\right)\)