2x^2-4x-k=0

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Solution for 2x^2-4x-k=0 equation:


Simplifying
2x2 + -4x + -1k = 0

Reorder the terms:
-1k + -4x + 2x2 = 0

Solving
-1k + -4x + 2x2 = 0

Solving for variable 'k'.

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

Add '4x' to each side of the equation.
-1k + -4x + 4x + 2x2 = 0 + 4x

Combine like terms: -4x + 4x = 0
-1k + 0 + 2x2 = 0 + 4x
-1k + 2x2 = 0 + 4x
Remove the zero:
-1k + 2x2 = 4x

Add '-2x2' to each side of the equation.
-1k + 2x2 + -2x2 = 4x + -2x2

Combine like terms: 2x2 + -2x2 = 0
-1k + 0 = 4x + -2x2
-1k = 4x + -2x2

Divide each side by '-1'.
k = -4x + 2x2

Simplifying
k = -4x + 2x2

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