How do you simplify (1/4)^(1/2)?

1 Answer
Jan 29, 2017

+-1/2

Explanation:

color(blue)("Demonstration of what this means using numbers")

5^(2/3) = root(3)(5^2)

5^(9/29)=root(29)(5^9)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
color(blue)("Answering the question")

Given: (1/4)^(1/2)

This is the same as:" "root(2)((1/4)^1)" " ->" "sqrt((1/4)^1)

Note that anything raised to the power of 1 is itself so (1/4)^1=1/4
so now we have: sqrt(1/4)

This is the same as:" "(sqrt(1))/(sqrt(4))=+-1/2

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
color(blue)("Footnote")

The answer has to be positive or negative.

(-1/2)xx(-1/2)=+1/4

(+1/2)xx(+1/2)=+1/4