Simplify by writing the expression using only positive exponents.

A. n10
B.
C.
D. n4

Answer: D

Mathematics

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A.

B.

C.

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A.
B. , - 
C.
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Provide an appropriate response.Sheila notes that if a = 20 and b = 20, then a - b = b - a = 0. She concludes that for any real numbers a and b, a - b = b - a . Do you agree with her reasoning? If not, why not?

What will be an ideal response?

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