Question

reason why 5 raise to half upon 5 raise to 4 is 5 raise to -ve 7 by 2

Answer 1

(5^1/2)/5^4

According to the exponential law,

a^m/a^n=a^m-n

Therefore (5^1/2)/5^4= 5^(1/2-4)

=5^(-7/2)

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