Question

Simplify the radical expression.
The square root of 144.

Answer 1

The square root of 144 = +12 and -12.

Answer 2

$\sqrt{144} = \sqrt{12\times 12} = \sqrt{12^2} = (12^2)^{\frac{1}{2}} = 12^{\frac{2}{2}} = 12^1 = \huge{\boxed{12}}$

Answer is 12.

Also note that -12 x -12 = 144