# How do you solve #sqrt(x+1) = 2#?

##### 2 Answers

Jun 2, 2016

x = 3

#### Explanation:

To 'undo' the square root we have to perform the inverse operation.

The inverse to 'square root' is 'square'. Since this is an equation we must square both sides.

#rArr(sqrt(x+1))^2=2^2rArrx+1=4rArrx=4-1=3#

Jun 2, 2016

#### Explanation:

When

Square both sides

Subtract

Check when

So answer is correct