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otez555 [7]
2 years ago
15

What is the value of the expression (−2)^4(−2)^-1?

Mathematics
1 answer:
Morgarella [4.7K]2 years ago
7 0
(-2)^4=16
(-2)^-1=-1/2
-1/2x16=-8
Answer: -8
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Answer:

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This question wants you to find a common denominator for the fractions.
This means finding the LCM, least common multiple, for 21 and 9.
This can be done by listing the multiples for each number until they meet at a common one.

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So you have to multiply the numerator of 2/21 by 3 as well.
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Now do the same for 1/9.
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So in the first blanks, you would put 6/63 for what 2/21 is equal to and 7/63 for what 1/9 is equal to.

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