Answer:
Step-by-step explanation:
means 9*9*9*9
Answer
-21x + 5y - 7
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Step-by-step explanation:
I think that the value of n is -10
Answer:
15e4
Step-by-step explanation:
I can not raise the exponent but there is 4, 15 being multiplied together and all you do is add how many of the same numbers are being multiplied together.