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22-09-2016
Mathematics

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A student claims that 8^3 x 8^-5 is greater than 1. Explain whether the student is correct or not.

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Аноним Аноним

22-09-2016

Remember:
a^m * a^n=a^(m+n)
a^-m=1/a^m

8³ x 8⁻⁵=8³⁻⁵=8⁻²=1/8²=1/64<1

Answer: the student is not correct, because 1/64<1, and 8³ x 8⁻⁵=1/64.

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