Question 80071
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What is {{{16^(-1/2)}}}? how do you solve this problem?

When you have a negative fraction exponent,

1.  Make it a positive exponent by writing it as the
    reciprocal of the same base with the exponent
    with the opposite sign.

2. Change the positive exponent to a radical form.

3. Simplify if possible.

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{{{16^(-1/2)}}} = {{{1/16^(1/2)}}} = {{{1/sqrt(16)}}} = {{{1/4}}} 

Edwin</pre>