x(x+1)^2-4(x+1) (2x+3)^2-9
[x(x+1) - 4](x+1) (x^2 + x - 4)(x+1) ? a^2-b^2 = (a+b)(a-b) (2x+3 + 3)(2x+3 - 3) (2x+6)(2x) 4(x+3)(x) 4x(x+3)
You can ask a new question or answer this question.