Which expression is equivalent to \(7xy(2x^2 + 9y)\)? | Ronan SAT

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Question

Prompt

Which expression is equivalent to

7 x y (2 x^{2} + 9 y)

?

9 x^{3} y + 16 x y^{2}

A

14 x^{2} y + 9 y

B

14 x^{2} y + 63 x y

C

14 x^{3} y + 63 x y^{2}

D