2x(x)=900

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Solution for 2x(x)=900 equation: 


Simplifying
2x(x) = 900

Multiply x * x
2x2 = 900

Solving
2x2 = 900

Solving for variable 'x'.

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

Divide each side by '2'.
x2 = 450

Simplifying
x2 = 450

Take the square root of each side:
x = {-21.213203436, 21.213203436}

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