-x^3+6x^2+15X+8=0

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Solution for -x^3+6x^2+15X+8=0 equation:


Simplifying
-1x3 + 6x2 + 15X + 8 = 0

Reorder the terms:
8 + 15X + 6x2 + -1x3 = 0

Solving
8 + 15X + 6x2 + -1x3 = 0

Solving for variable 'X'.

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

Add '-8' to each side of the equation.
8 + 15X + 6x2 + -8 + -1x3 = 0 + -8

Reorder the terms:
8 + -8 + 15X + 6x2 + -1x3 = 0 + -8

Combine like terms: 8 + -8 = 0
0 + 15X + 6x2 + -1x3 = 0 + -8
15X + 6x2 + -1x3 = 0 + -8

Combine like terms: 0 + -8 = -8
15X + 6x2 + -1x3 = -8

Add '-6x2' to each side of the equation.
15X + 6x2 + -6x2 + -1x3 = -8 + -6x2

Combine like terms: 6x2 + -6x2 = 0
15X + 0 + -1x3 = -8 + -6x2
15X + -1x3 = -8 + -6x2

Add 'x3' to each side of the equation.
15X + -1x3 + x3 = -8 + -6x2 + x3

Combine like terms: -1x3 + x3 = 0
15X + 0 = -8 + -6x2 + x3
15X = -8 + -6x2 + x3

Divide each side by '15'.
X = -0.5333333333 + -0.4x2 + 0.06666666667x3

Simplifying
X = -0.5333333333 + -0.4x2 + 0.06666666667x3

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