Question

Answer 1

13: \(y\left(3-2x\right)+y\left(2x-3\right)=\left(2x-3\right)\left(-y+y\right)=0\)

10: \(5a\left(a-5\right)-7\left(5-a\right)=\left(a-5\right)\left(5a+7\right)\)