x^2-8x+k=0

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Solution for x^2-8x+k=0 equation:


Simplifying
x2 + -8x + k = 0

Reorder the terms:
k + -8x + x2 = 0

Solving
k + -8x + x2 = 0

Solving for variable 'k'.

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

Add '8x' to each side of the equation.
k + -8x + 8x + x2 = 0 + 8x

Combine like terms: -8x + 8x = 0
k + 0 + x2 = 0 + 8x
k + x2 = 0 + 8x
Remove the zero:
k + x2 = 8x

Add '-1x2' to each side of the equation.
k + x2 + -1x2 = 8x + -1x2

Combine like terms: x2 + -1x2 = 0
k + 0 = 8x + -1x2
k = 8x + -1x2

Simplifying
k = 8x + -1x2

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