Multiply using a special product formula.2

A. 81x2 - 
B. 81x2 + 2x + 
C. 81x2 - x - 
D. 81x2 + x


Answer: B

Mathematics

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Factor out the greatest common factor. Simplify the factors, if possible.10wx - 25wy - 15wz

A. 5w(2x - 25wy - 15wz) B. 5w(2x - 5y - 3z) C. 10w(x - 25y - 15z) D. 5(2wx - 5wy - 3wz)

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Find the mean proportional (geometric mean) of 15 and 20.

What will be an ideal response?

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