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Question
Evaluate : `9^(5/2) - 3 xx 8^0 - (1/81)^(-1/2)`
Sum
Solution
`9^(5/2) - 3 xx 8^0 - (1/81)^(-1/2)`
= `(3^2)^(5/2) - 3 xx 1 - (1/3^4)^(-1/2)`
= `3^( 2 xx 5/2 ) - 3 - 3^[- 4 xx (-1/2)]`
= 35 - 3 - 32
= 243 - 3 - 9
= 231
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