Question

What is the simplified form of the expression? √169

Answer 1

13

Explanation:

`169` is a square because `13\cdot13=169`, or `13^2=169`
So we can replace,

`\sqrt169=\sqrt(13^2)\rarr13`

Answer 2

`sqrt169=+-13`

Explanation:

`"since "13xx13=169" and "-13xx-13=169`

`"then "sqrt169=+-13`