X^2-406=0

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Solution for X^2-406=0 equation: 


Simplifying
X2 + -406 = 0

Reorder the terms:
-406 + X2 = 0

Solving
-406 + X2 = 0

Solving for variable 'X'.

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

Add '406' to each side of the equation.
-406 + 406 + X2 = 0 + 406

Combine like terms: -406 + 406 = 0
0 + X2 = 0 + 406
X2 = 0 + 406

Combine like terms: 0 + 406 = 406
X2 = 406

Simplifying
X2 = 406

Take the square root of each side:
X = {-20.14944168, 20.14944168}

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