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mamaluj [8]
3 years ago
14

Find the coefficient of x2 in (3x2 – 5) (4 + 4x2), expand using algebraic expressions and answer

Mathematics
1 answer:
Scilla [17]3 years ago
7 0

Answer:

- 8

Step-by-step explanation:

Given

(3x² - 5)(4 + 4x²)

Each term in the second factor is multiplied by each term in the first factor, that is

3x²(4 + 4x²) - 5 (4 + 4x²) ← distribute both parenthesis

= 12x² + 12x^{4} - 20 - 20x² ← collect like terms

= 12x^{4} - 8x² - 20

The coefficient of the x² term is - 8

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