(x+1)(x+2)(x+3)(x+6)-3x2(x+1)(x+1+1)(x+3)(x+3+3)-3x2[(x+1)2 +(x+1)] [(x+3)2 +3(x+3)]-3x2(x+1)2(x+3)2 +3(x+1)2(x+3) + (x+3)2(x+1) + 3(x+1)(x+3) - 3x2(x+1)2(x+3)2 +2(x+1)(x+3)(2x+3) + 3(x+1)(x+3) - 3x2(x+1)2(x+3)2 +2(x+1)(x+3)(2x+3) +(2x+3)2 -(2x+3)2 - 4x2i didnt get the last and second last step plzz xplain

ajinkya bhole , 14 Years ago

Grade 10