Question

Answer 1

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

13) \(10ay-5by+2ax-bx=5y\left(2a-b\right)+x\left(2a-b\right)=\left(2a-b\right)\left(5y+x\right)\)

Answer 2

12) x2−xy−2x+2y=x(x−y)−2(x−y)=(x−y)(x−2)

13) 10ay−5by+2ax−bx=5y(2a−b)+x(2a−b)=(2a−b)(5y+x)

Answer 3

12: \(x^2-xy-2x+2y\)

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

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

13: \(10ay-5by+2ax-bx\)

\(=5y\left(2a-b\right)+x\left(2a-b\right)\)

\(=\left(2a-b\right)\left(5y+x\right)\)