Factor the trinomial completely. If the polynomial cannot be factored, write "prime."7y4 + 91y3 + 252y2

A. 7y2(y + 4)(y + 9)
B. 7y(y2 + 4y)(y + 9)
C. 7(y2 + 4)(y2 + 9)
D. y2(y + 4)(7y + 63)


Answer: A

Mathematics

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