x^2-.2x^2=100

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Solution for x^2-.2x^2=100 equation: 


Simplifying
x2 + -0.2x2 = 100

Combine like terms: x2 + -0.2x2 = 0.8x2
0.8x2 = 100

Solving
0.8x2 = 100

Solving for variable 'x'.

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

Divide each side by '0.8'.
x2 = 125

Simplifying
x2 = 125

Take the square root of each side:
x = {-11.180339887, 11.180339887}

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