E = -2x(x+2)(x-3)+(x-1)(x+1)(2x-1)
E = -2x(x²-x-6)+(x²-1)(2x-1)
E = -2x^3+2x²+12x+2x^3-x²-2x+1
E = x²+10x+1
G = (3x²-5x+1)(-5x²+4x-2)
G = -15x^4+12x^3-6x²+25x^3-20x²+10x-5x²+4x-2
G = -15x^4+37x^3-31x²+14x-2
H = (6x-5)[2(3x-4)-3(-2x-5)]
H = (6x-5)(6x-8+6x+15)
H = (6x-5)(12x+7)
H = 72x²-18x-35
I = 2(3x+7)² - (6-x)²
I = 2(9x²+42x+49)-36+12x-x²
I = 18x²-x²+84x+12x+98-36
I = 17x²+96x+62