# How do you solve sqrt x - 1 = 2?

Dec 24, 2016

$x = 9$

#### Explanation:

$\sqrt{x} - 1 = 2$

or, $\sqrt{x} - 1 + 1 = 2 + 1 \rightarrow$Adding 1 on both sides.

or, $\sqrt{x} = 3$

or, ${\sqrt{x}}^{2} = {3}^{2} \rightarrow$Squaring both sides.

or, $x = 9$