x^2-900=0

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Solution for x^2-900=0 equation: 


Simplifying
x2 + -900 = 0

Reorder the terms:
-900 + x2 = 0

Solving
-900 + x2 = 0

Solving for variable 'x'.

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

Add '900' to each side of the equation.
-900 + 900 + x2 = 0 + 900

Combine like terms: -900 + 900 = 0
0 + x2 = 0 + 900
x2 = 0 + 900

Combine like terms: 0 + 900 = 900
x2 = 900

Simplifying
x2 = 900

Take the square root of each side:
x = {-30, 30}

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