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Simplifying
8 + -1x2 = x2
Solving
8 + -1x2 = x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-1x2' to each side of the equation.
8 + -1x2 + -1x2 = x2 + -1x2
Combine like terms: -1x2 + -1x2 = -2x2
8 + -2x2 = x2 + -1x2
Combine like terms: x2 + -1x2 = 0
8 + -2x2 = 0
Add '-8' to each side of the equation.
8 + -8 + -2x2 = 0 + -8
Combine like terms: 8 + -8 = 0
0 + -2x2 = 0 + -8
-2x2 = 0 + -8
Combine like terms: 0 + -8 = -8
-2x2 = -8
Divide each side by '-2'.
x2 = 4
Simplifying
x2 = 4
Take the square root of each side:
x = {-2, 2}
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