2a+2b+a^2+ab 6a-3 12x^2y-6xy+24xy^2
1) 2a+2b+a^2+ab = a(a + 2)+b(a+2) = (a + 2)*(a + b) 2) 6a-3 ??? 3) 12x^2y-6xy+24xy^2 = 6xy*(2x + 4y - 1)