Question 1
(4x³ + 2x²)(6x - 9) = **24x⁴ - 36x³ + 12x³ - 18x² = 24x⁴ - 24x³ - 18x²**
Question 2
(5y² - 6y)(7y⁷ - y³) = **35y⁹ - 5y⁵ - 42y⁸ + 6y⁴ = 35y⁹ - 42y⁸ + 5y⁵ + 6y⁴**
Question 3
3x²(2x⁴ - 15x) = **6x⁶ - 45x³**
Question 4
(3x² - 8)(4x² + 7) = **12x⁴ + 21x² - 32**
Question 5
(−3x⁵ - 4x⁴)(7x² - 2x + 6) = **-21x⁷ + 6x⁵ + 8x⁶ + 12x⁴**