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26 votes
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The expression x^4-9

a. (x^2-3) (x^2-3)

b. (x^+3) (x^+3)

c. (x^2+3) (x^2-3)

d. (x^+1) (x^2-9)

User Erndob
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1 Answer

15 votes
15 votes

Answer: C

Explanation:

By the difference of squares,
x^(4)-9=(x^(2)+3)(x^(2)-3)

User Andre Schweighofer
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