# How do you solve the equation x^2+a=4?

Jul 26, 2017

#### Explanation:

${x}^{2} = 4 - a$

$x = \sqrt{4 - a}$

a must be less than or equal to 4.

$x = \sqrt{4 - a}$

If a is 1, for instance, you can get:

$x = \sqrt{3}$