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Setler79 [48]
3 years ago
8

Find the coefficient of x2 in ( 4+ 4x2)( 3x2–5).

Mathematics
1 answer:
algol133 years ago
8 0

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

= 12x^{4} - 8x² - 20

with coefficient of x² term being - 8

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