x^2-kx-15=0

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Solution for x^2-kx-15=0 equation:


Simplifying
x2 + -1kx + -15 = 0

Reorder the terms:
-15 + -1kx + x2 = 0

Solving
-15 + -1kx + x2 = 0

Solving for variable 'k'.

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

Add '15' to each side of the equation.
-15 + -1kx + 15 + x2 = 0 + 15

Reorder the terms:
-15 + 15 + -1kx + x2 = 0 + 15

Combine like terms: -15 + 15 = 0
0 + -1kx + x2 = 0 + 15
-1kx + x2 = 0 + 15

Combine like terms: 0 + 15 = 15
-1kx + x2 = 15

Add '-1x2' to each side of the equation.
-1kx + x2 + -1x2 = 15 + -1x2

Combine like terms: x2 + -1x2 = 0
-1kx + 0 = 15 + -1x2
-1kx = 15 + -1x2

Divide each side by '-1x'.
k = -15x-1 + x

Simplifying
k = -15x-1 + x

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