x^2-147=-x^2

Solution for x^2-147=-x^2 equation:

Simplifying
x2 + -147 = -1x2

Reorder the terms:
-147 + x2 = -1x2

Solving
-147 + x2 = -1x2

Solving for variable 'x'.

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

Add 'x2' to each side of the equation.
-147 + x2 + x2 = -1x2 + x2

Combine like terms: x2 + x2 = 2x2
-147 + 2x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-147 + 2x2 = 0

Add '147' to each side of the equation.
-147 + 147 + 2x2 = 0 + 147

Combine like terms: -147 + 147 = 0
0 + 2x2 = 0 + 147
2x2 = 0 + 147

Combine like terms: 0 + 147 = 147
2x2 = 147

Divide each side by '2'.
x2 = 73.5

Simplifying
x2 = 73.5

Take the square root of each side:
x = {-8.5732141, 8.5732141}