2 years ago

Which is a factor of 45x^4−5x^2? Show work.a. 5x+2 b. 9x−1 c. 6x+5 d. 3x−1

1 answer:

Lelu [443]2 years ago

7 0

Answer:

d. 3x - 1.

Step-by-step explanation:

45x^4−5x^2

The GCF is 5x^2 so we have:

5x^2(9x^2 - 1)

The expression in the parentheses is the difference of 2 squares so:

= 5x^2(3x - 1)(3x + 1)

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