Factor out the greatest common factor. Simplify the factors, if possible.8x7y9 + 28x2y7 + 28x4y5

A. 4x2(2x5y9 + 7y7 + 7x2y5)
B. 4x2y5(2x5y4 + 7y2 + 7x2)
C. 4(2x7y9 + 7x2y7 + 7x4y5)
D. x2y5(8x5y4 + 28y2 + 28x2)


Answer: B

Mathematics

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