.81x^2=80

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Solution for .81x^2=80 equation: 


Simplifying
0.81x2 = 80

Solving
0.81x2 = 80

Solving for variable 'x'.

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

Divide each side by '0.81'.
x2 = 98.7654321

Simplifying
x2 = 98.7654321

Take the square root of each side:
x = {-9.9380799, 9.9380799}

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