(x+x)*x=200

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Solution for (x+x)*x=200 equation: 


Simplifying
(x + x) * x = 200

Combine like terms: x + x = 2x
(2x) * x = 200

Remove parenthesis around (2x)
2x * x = 200

Multiply x * x
2x2 = 200

Solving
2x2 = 200

Solving for variable 'x'.

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

Divide each side by '2'.
x2 = 100

Simplifying
x2 = 100

Take the square root of each side:
x = {-10, 10}

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