9=4+x^2

Solution for 9=4+x^2 equation:

Simplifying
9 = 4 + x2

Solving
9 = 4 + x2

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x2' to each side of the equation.
9 + -1x2 = 4 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
9 + -1x2 = 4 + 0
9 + -1x2 = 4

Add '-9' to each side of the equation.
9 + -9 + -1x2 = 4 + -9

Combine like terms: 9 + -9 = 0
0 + -1x2 = 4 + -9
-1x2 = 4 + -9

Combine like terms: 4 + -9 = -5
-1x2 = -5

Divide each side by '-1'.
x2 = 5

Simplifying
x2 = 5

Take the square root of each side:
x = {-2.236067978, 2.236067978}