Multiply and write the result in standard form.(6 + 6i)(3 + 9i)

A. 72 - 36i
B. -36 - 72i
C. 54i2 + 72i + 18
D. -36 + 72i


Answer: D

Mathematics

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Find and simplify the difference quotient  for the given function.f(x) = 6x2

A.
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C. 6
D. 6(2x+h)

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