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Simplifying
-2x2 + x2 = 0
Combine like terms: -2x2 + x2 = -1x2
-1x2 = 0
Solving
-1x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '-1'.
x2 = 0
Simplifying
x2 = 0
Take the square root of each side:
x = {0}
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