x^2+2x^2=225

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Solution for x^2+2x^2=225 equation: 


Simplifying
x2 + 2x2 = 225

Combine like terms: x2 + 2x2 = 3x2
3x2 = 225

Solving
3x2 = 225

Solving for variable 'x'.

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

Divide each side by '3'.
x2 = 75

Simplifying
x2 = 75

Take the square root of each side:
x = {-8.660254038, 8.660254038}

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