x^3+2x^2-9x+k=0

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Solution for x^3+2x^2-9x+k=0 equation:


Simplifying
x3 + 2x2 + -9x + k = 0

Reorder the terms:
k + -9x + 2x2 + x3 = 0

Solving
k + -9x + 2x2 + x3 = 0

Solving for variable 'k'.

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

Add '9x' to each side of the equation.
k + -9x + 2x2 + 9x + x3 = 0 + 9x

Reorder the terms:
k + -9x + 9x + 2x2 + x3 = 0 + 9x

Combine like terms: -9x + 9x = 0
k + 0 + 2x2 + x3 = 0 + 9x
k + 2x2 + x3 = 0 + 9x
Remove the zero:
k + 2x2 + x3 = 9x

Add '-2x2' to each side of the equation.
k + 2x2 + -2x2 + x3 = 9x + -2x2

Combine like terms: 2x2 + -2x2 = 0
k + 0 + x3 = 9x + -2x2
k + x3 = 9x + -2x2

Add '-1x3' to each side of the equation.
k + x3 + -1x3 = 9x + -2x2 + -1x3

Combine like terms: x3 + -1x3 = 0
k + 0 = 9x + -2x2 + -1x3
k = 9x + -2x2 + -1x3

Simplifying
k = 9x + -2x2 + -1x3

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