Nali
how do you solve 25^(3/4) without a calculator?



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Nali
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does it have to do with square root?

mboorstin
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You need to cube it, find that thing's fourth root, and then divide 1 by it.

saifoo.khan
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dw:1345836408338:dw

Nali
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ok i get u @saifoo.khan

mboorstin
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\(\displaystyle\left(5^2\right)^{\left(\tfrac{3}{4}\right)}=5^{\tfrac{3}{2}}=\frac{1}{5^\tfrac{3}{2}}=\frac{1}{\sqrt{125}}=\frac{125}{\sqrt{125}}\).

sasogeek
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\(\huge x^4 = \frac{1}{25^3}\)
solve for x :)

saifoo.khan
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dw:1345836856577:dw

saifoo.khan
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dw:1345836902782:dw

Nali
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ok thanku