8=x*x+4

Solution for 8=x*x+4 equation:

Simplifying
8 = x * x + 4

Multiply x * x
8 = x2 + 4

Reorder the terms:
8 = 4 + x2

Solving
8 = 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.
8 + -1x2 = 4 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
8 + -1x2 = 4 + 0
8 + -1x2 = 4

Add '-8' to each side of the equation.
8 + -8 + -1x2 = 4 + -8

Combine like terms: 8 + -8 = 0
0 + -1x2 = 4 + -8
-1x2 = 4 + -8

Combine like terms: 4 + -8 = -4
-1x2 = -4

Divide each side by '-1'.
x2 = 4

Simplifying
x2 = 4

Take the square root of each side:
x = {-2, 2}