Simplify.(x-9)-7

A. x63
B.
C. -x63
D. -7x63

Answer: A

Mathematics

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Express the given expression in simplest form with only positive exponents.-4

A. x16y16w4z20
B.
C.
D.

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Combine and simplify. + 7 - 2

A. 5
B. 39
C. 39
D. 5

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Multiply.7z2(-3z2 + 6z + 6)

A. -21z4 + 42z3 + 42z2 B. 4z4 + 13z + 13 C. -21z4 + 42z + 42 D. -21z4 + 42z2 + 42

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