2X^2-5=123

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Solution for 2X^2-5=123 equation: 


Simplifying
2X2 + -5 = 123

Reorder the terms:
-5 + 2X2 = 123

Solving
-5 + 2X2 = 123

Solving for variable 'X'.

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

Add '5' to each side of the equation.
-5 + 5 + 2X2 = 123 + 5

Combine like terms: -5 + 5 = 0
0 + 2X2 = 123 + 5
2X2 = 123 + 5

Combine like terms: 123 + 5 = 128
2X2 = 128

Divide each side by '2'.
X2 = 64

Simplifying
X2 = 64

Take the square root of each side:
X = {-8, 8}

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