3x(7x + 9y) + 8x(y + 4) =
a. 21x + 27xy + 8y + 32x
b. 21x2 + 35xy + 32
c. 21x + 35xy + 32y + 4
d. 21x2 + 32x + 35xy
e. 21x2 + 17xy + 8x + 4
d. 21x2 + 32x + 35xy
Mathematics
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