Answer:
Step-by-step explanation:
(x² + 2x - 3 ) *(4x² - 5x + 6) = x² *(4x² - 5x +6) +2x*(4x² - 5x + 6) -3*(4x² - 5x + 6)
= x²*4x² + x²*(-5x) + x²*6 +2x*4x² + 2x*(-5x) +2x*6 + (-3)*4x² + (-3)*(-5x) + (-3)*6
= 4x⁴ - 5x³ + 6x² + 8x³ - 10x² + 12x - 12x² + 15x - 18
= 4x⁴ - 5x³ + 8x³ + 6x² -10x² - 12x² + 12x + 15x - 18
= 4x⁴ + 3x³ - 16x² + 27x - 18
