x^4-4x^3-kx^2+6kx+9=0

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Solution for x^4-4x^3-kx^2+6kx+9=0 equation:


Simplifying
x4 + -4x3 + -1kx2 + 6kx + 9 = 0

Reorder the terms:
9 + 6kx + -1kx2 + -4x3 + x4 = 0

Solving
9 + 6kx + -1kx2 + -4x3 + x4 = 0

Solving for variable 'k'.

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

Add '-9' to each side of the equation.
9 + 6kx + -1kx2 + -4x3 + -9 + x4 = 0 + -9

Reorder the terms:
9 + -9 + 6kx + -1kx2 + -4x3 + x4 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 6kx + -1kx2 + -4x3 + x4 = 0 + -9
6kx + -1kx2 + -4x3 + x4 = 0 + -9

Combine like terms: 0 + -9 = -9
6kx + -1kx2 + -4x3 + x4 = -9

Add '4x3' to each side of the equation.
6kx + -1kx2 + -4x3 + 4x3 + x4 = -9 + 4x3

Combine like terms: -4x3 + 4x3 = 0
6kx + -1kx2 + 0 + x4 = -9 + 4x3
6kx + -1kx2 + x4 = -9 + 4x3

Add '-1x4' to each side of the equation.
6kx + -1kx2 + x4 + -1x4 = -9 + 4x3 + -1x4

Combine like terms: x4 + -1x4 = 0
6kx + -1kx2 + 0 = -9 + 4x3 + -1x4
6kx + -1kx2 = -9 + 4x3 + -1x4

Reorder the terms:
9 + 6kx + -1kx2 + -4x3 + x4 = -9 + 4x3 + -1x4 + 9 + -4x3 + x4

Reorder the terms:
9 + 6kx + -1kx2 + -4x3 + x4 = -9 + 9 + 4x3 + -4x3 + -1x4 + x4

Combine like terms: -9 + 9 = 0
9 + 6kx + -1kx2 + -4x3 + x4 = 0 + 4x3 + -4x3 + -1x4 + x4
9 + 6kx + -1kx2 + -4x3 + x4 = 4x3 + -4x3 + -1x4 + x4

Combine like terms: 4x3 + -4x3 = 0
9 + 6kx + -1kx2 + -4x3 + x4 = 0 + -1x4 + x4
9 + 6kx + -1kx2 + -4x3 + x4 = -1x4 + x4

Combine like terms: -1x4 + x4 = 0
9 + 6kx + -1kx2 + -4x3 + x4 = 0

The solution to this equation could not be determined.

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