-x^2+2x-k=0

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Solution for -x^2+2x-k=0 equation:


Simplifying
-1x2 + 2x + -1k = 0

Reorder the terms:
-1k + 2x + -1x2 = 0

Solving
-1k + 2x + -1x2 = 0

Solving for variable 'k'.

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

Add '-2x' to each side of the equation.
-1k + 2x + -2x + -1x2 = 0 + -2x

Combine like terms: 2x + -2x = 0
-1k + 0 + -1x2 = 0 + -2x
-1k + -1x2 = 0 + -2x
Remove the zero:
-1k + -1x2 = -2x

Add 'x2' to each side of the equation.
-1k + -1x2 + x2 = -2x + x2

Combine like terms: -1x2 + x2 = 0
-1k + 0 = -2x + x2
-1k = -2x + x2

Divide each side by '-1'.
k = 2x + -1x2

Simplifying
k = 2x + -1x2

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