Factor completely. If the polynomial is prime, state so.x9 - 343y6
A. (x3 - 7y2)(x6 + 7x3y2 + 49y4)
B. (x3 - 7y2)(x6 + 7x2y3 + 49y4)
C. (x3 + 7y2)(x6 + 7x3y2 + 49y4)
D. (x3 - 7y2)(x3 - 7x3y2 - 49y2)
Answer: A
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A. x =
B. x = 196
C. x = 21
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