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Simplifying
x(x + -2) = 2(2 + -1x)
Reorder the terms:
x(-2 + x) = 2(2 + -1x)
(-2 * x + x * x) = 2(2 + -1x)
(-2x + x2) = 2(2 + -1x)
-2x + x2 = (2 * 2 + -1x * 2)
-2x + x2 = (4 + -2x)
Add '2x' to each side of the equation.
-2x + 2x + x2 = 4 + -2x + 2x
Combine like terms: -2x + 2x = 0
0 + x2 = 4 + -2x + 2x
x2 = 4 + -2x + 2x
Combine like terms: -2x + 2x = 0
x2 = 4 + 0
x2 = 4
Solving
x2 = 4
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Simplifying
x2 = 4
Take the square root of each side:
x = {-2, 2}
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