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Question
Evaluate the following:
`9^(5/2) - 3 xx 5^0 - (1/81)^((-1)/2)`
Sum
Solution
`9^(5/2) - 3 xx 5^0 - (1/81)^((-1)/2)`
= `3^(2 xx 5/2) - 3 xx 1 - (1/81)^((-1)/2)`
= `3^5 - 3 - 9^(2 xx 1/2)`
= 243 - 3 - 9
= 231.
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Solving Exponential Equations
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