Question

Answer 1

\(a,=\left(6x+1-6x+1\right)^2=2^2=4\\ b,=3x^2-6x-5x+5x^2-8x^2+24=24-11x\\ c,=14x^2+7x-6x-3-5x^2-20x+2x+8-9x^2+17x=5\\ d,=6x^2+48x-5x-40-6x^2-9x+2x+3-36x+27=-10\\ e,=-3x\left(x^2+4x+4\right)+\left(x+3\right)\left(x^2-1\right)-4x^2+12x-9\\ =-3x^3-12x^2-4x+x^3-x+3x^2-3x-4x^2+12x-9\\ =-2x^3-13x^2+4x-9\\ f,=2x\left(x^2-8x+16\right)-\left(x+5\right)\left(x^2-4\right)+2\left(x^2-10x+25\right)-x^2+2x-1\\ =2x^3-16x^2+32x-x^3+4x-5x^2+20+2x^2-20x+50-x^2+2x-1\\ =x^3-20x^2+18x+69\)