A = x²+3x + 2x+6 = x² + 5x + 6
B = 15x² + 12x + 40x + 32 = 15x² + 52x + 32
C = 7x+x² + 35+5x = x² + 12x + 35
D = 30x + 70 + 6x² + 14x = 6x² + 44x + 70
E = x² - 8x + 4x - 32 = x² -4x -32
F = 18x² - 30x + 6x - 10 = 18x² -24x - 10
G = x² + x -7x -7 = x² -6x -7
H = 9x + 45 - 11x² -55x = -11x² - 46x + 45
I = x² - 4x - 2x + 8 = x² - 6x + 8
J = -24x² + 4 + 48x - 8 = -24x² + 48x - 4