Answer :
45x² · x² - 5x - 36 = 45x²(x² - 5x - 36) = 45x⁴ - 225x³ - 1620x² =
x - 9 x³ + 12x² (x - 9)(x³ + 12x²) x⁴ + 3x³ - 108x²
45 with a remainder of -360x³ + 3240x²
x - 9 x³ + 12x² (x - 9)(x³ + 12x²) x⁴ + 3x³ - 108x²
45 with a remainder of -360x³ + 3240x²