x^2-324=0

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Solution for x^2-324=0 equation: 


Simplifying
x2 + -324 = 0

Reorder the terms:
-324 + x2 = 0

Solving
-324 + x2 = 0

Solving for variable 'x'.

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

Add '324' to each side of the equation.
-324 + 324 + x2 = 0 + 324

Combine like terms: -324 + 324 = 0
0 + x2 = 0 + 324
x2 = 0 + 324

Combine like terms: 0 + 324 = 324
x2 = 324

Simplifying
x2 = 324

Take the square root of each side:
x = {-18, 18}

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