2(x-7)+y(x-7) (n+4)-p(n+4) c(x-8)+3(8-x) 5a+5y+pa+py ab+ax-4b-4c 3n-3m-ay+my

2(x -7) +y(x -7) =(x -7)(2 +y)

(n +4) -p(n +4) =(n +4)(1 -p)

c(x -8) +3(8 -x) =c(x -8) -3(x -8) =(x -8)(c -3)

5a +5y +pa +py =5(a +y) +p(a +y) =(a +y)(5 +p)

ab +ax -4b -4x =a(b +x) -4(b +x) =(b +x)(a -4)

3n -3m -ny +my =3(n -m) -y(n -m) =(n -m)(3 -y)