1) 2a + b + 2a^2 + ab = 2a(1+a) + b(1+a) = (2a+b)(a+1)2) 3a + 3a^2 - b - ab = 3a(1+a) - b(1+a) = (3a-b)(a+1)3) 2x^2 - 3x + 4ax - 6a = x(2x-3) + 2a(2x-3) = (x+2a)(2x-3)4) x^2y^2 + xy + axy + a = xy(xy + 1) + a(xy + 1) = (xy+a)(xy+1)
1) 2a + b + 2a^2 + ab = 2a(1+a) + b(1+a) = (2a+b)(a+1)
2) 3a + 3a^2 - b - ab = 3a(1+a) - b(1+a) = (3a-b)(a+1)
3) 2x^2 - 3x + 4ax - 6a = x(2x-3) + 2a(2x-3) = (x+2a)(2x-3)
4) x^2y^2 + xy + axy + a = xy(xy + 1) + a(xy + 1) = (xy+a)(xy+1)