\(x^x+x-2ax-2a\)
\(=x\left(x+1\right)-2a\left(x+1\right)\)
\(=\left(x+1\right)\left(x-2a\right)\)
\(=x\left(x+1\right)-2a\left(x+1\right)=\left(x-2a\right)\left(x+1\right)\)
\(x^2+x-2ax-2a=x\left(x+1\right)-2a\left(x+1\right)=\left(x+1\right)\left(x-2a\right)\)

