Question

please answer ~^~

solve the given exponential equations.....

$(a). ({8})^{x - 2} - 1$
$(b). \: ( \sqrt{ {5}^{x} } ) = {5}^{18}$
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Answer 1

b) sqrt of 5^x = 5^18...

sqrt means power 1/2...

5^(x*1/2) = 5^18...

5^(x/2) = 5^18..

x/2 = 18....

X = 36...