How do you write $\frac{1}{\sqrt{2}}$ $1/sqrt2$ as a fractional exponent?

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Answer 1 · 2015-06-13T21:56:28

$2^{- \frac{1}{2}}$ $2^(-1/2)$

You can use the propreties of exponents:
1] $x^{- a} = \frac{1}{x^{a}}$ $x^-a=1/x^a$
2] $x^{\frac{m}{n}} = \sqrt[n]{x^{m}}$ $x^(m/n)=rootn(x^m)$

How do you write 1/sqrt21√21/sqrt2 as a fractional exponent?