x^2-2x-e=0

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Solution for x^2-2x-e=0 equation:


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

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

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

Solving for variable 'e'.

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

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

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

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

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

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

Simplifying
e = -2x + x2

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