(3x + 4)(3x – 4)
(2x – 3)(4x + 7)
(4x² - 1)(6x² - 9)
(x + 3)(x² - 7x + 6)
4xy(x³-2x²-x-3)
(4x³y²z)(-5xy⁴z²)
(x +6) (x +2)
3x(2x² - 7x + 4)
(5x + 3)(5x – 3)
(5x²y)(-3x⁴y³)(4xy²)
4x⁴y – 8x³y – 4x²y -12xy
6x³ - 21x² + 12
-60x⁷y⁶
9x² - 16
x³ - 4x² - 15x + 18
8x² + 2x - 21
25x² - 9
-20x⁴y⁶z³
x² + 8x + 12
24x⁴ - 42x² + 9