8x^3-kx^2-4x-2=0

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Solution for 8x^3-kx^2-4x-2=0 equation:


Simplifying
8x3 + -1kx2 + -4x + -2 = 0

Reorder the terms:
-2 + -1kx2 + -4x + 8x3 = 0

Solving
-2 + -1kx2 + -4x + 8x3 = 0

Solving for variable 'k'.

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

Add '2' to each side of the equation.
-2 + -1kx2 + -4x + 2 + 8x3 = 0 + 2

Reorder the terms:
-2 + 2 + -1kx2 + -4x + 8x3 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -1kx2 + -4x + 8x3 = 0 + 2
-1kx2 + -4x + 8x3 = 0 + 2

Combine like terms: 0 + 2 = 2
-1kx2 + -4x + 8x3 = 2

Add '4x' to each side of the equation.
-1kx2 + -4x + 4x + 8x3 = 2 + 4x

Combine like terms: -4x + 4x = 0
-1kx2 + 0 + 8x3 = 2 + 4x
-1kx2 + 8x3 = 2 + 4x

Add '-8x3' to each side of the equation.
-1kx2 + 8x3 + -8x3 = 2 + 4x + -8x3

Combine like terms: 8x3 + -8x3 = 0
-1kx2 + 0 = 2 + 4x + -8x3
-1kx2 = 2 + 4x + -8x3

Divide each side by '-1x2'.
k = -2x-2 + -4x-1 + 8x

Simplifying
k = -2x-2 + -4x-1 + 8x

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