Question

Simplify:

(ix) 9^5/2 - 3*5^0 - (1/81)^ -1/2

Answer 1

yep got ....................

Answer 2

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$\\ = {9}^{ \frac{5}{2} } - 3 \times {5}^{0} - {( \frac{1}{81}) }^{ - \frac{1}{2} } \\ \\ = {3}^{5} - 3 \times 1 - \sqrt{81} \\ \\ = 243 - 3 - 9 \\ \\ = 243 - 12 \\ \\ = 231$
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