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Factor each polynomial completely. If the polynomial cannot be factored, say it is prime.
A. x^2 + 7
B. x^4 - 1
Question A
The polynomial x^2 + 7 cannot be factored. It is prime.
Question B
x^4 - 1
(x^2 - 1)(x^2 + 1)
(x - 1)(x + 1)(x^2 + 1)...answer.
Note: x^2 + 1 is prime and thus cannot be factored.
Do you agree?
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