Solve the problem.Let f(x, y) = 5 - 7x2 + 9y3Find 

A. 27y2h + 27yh + 27h2
B. 9y2h + 27yh + 9h2
C. 27y2 + 27yh + 9h2
D. -7x2 + 27y2 + 27yh + 9h2


Answer: C

Mathematics

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