x(x-0.5x)=800

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Solution for x(x-0.5x)=800 equation: 


Simplifying
x(x + -0.5x) = 800

Combine like terms: x + -0.5x = 0.5x
x(0.5x) = 800

Remove parenthesis around (0.5x)
x * 0.5x = 800

Reorder the terms for easier multiplication:
0.5x * x = 800

Multiply x * x
0.5x2 = 800

Solving
0.5x2 = 800

Solving for variable 'x'.

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

Divide each side by '0.5'.
x2 = 1600

Simplifying
x2 = 1600

Take the square root of each side:
x = {-40, 40}

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