a \(x\cdot\left(a-2\right)-a\left(a-2\right)\)
\(\left(x-a\right)\cdot\left(a-2\right)\)
b ,\(x\left(x+1\right)-a\left(x+1\right)\)
\(\left(x-a\right)\cdot\left(x+1\right)\)
c ,\(2x\left(x+2a\right)+x+2a\)
(2x+1)(x+2a)
d, 2xy+x^2-ax-2ay
x(2y+x)-a(x+2y)
(x-a)(x+2y)
e, x^2(x+a)+x+a
(x^2+1)(x+a)
f, y^2(y+x^2)+z(x^2+y)
(y^2+z)(y+x^2)