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