Answer:
- 8
Step-by-step explanation:
Given
(4 +4 x²)(3x² - 5)
Each term in the second factor is multiplied by each term in the first factor, that is
4(3x² - 5) + 4x²(3x² - 5) ← distribute parenthesis
= 12x² - 20 + 12[tex]x^{4}[/tex] - 20x² ← collect like terms
= 12[tex]x^{4}[/tex] - 8x² - 20
with coefficient of x² term being - 8
