Multiply: (x+4)(x+3)(x + 4)(x + 3)(x+4)(x+3).
x2+7x+12x^2 + 7x + 12x2+7x+12
x2+12x+7x^2 + 12x + 7x2+12x+7
x2+7x+7x^2 + 7x + 7x2+7x+7
x2−7x+12x^2 - 7x + 12x2−7x+12