x^3+bx^2+cx-15=0

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Solution for x^3+bx^2+cx-15=0 equation:


Simplifying
x3 + bx2 + cx + -15 = 0

Reorder the terms:
-15 + bx2 + cx + x3 = 0

Solving
-15 + bx2 + cx + x3 = 0

Solving for variable 'b'.

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

Add '15' to each side of the equation.
-15 + bx2 + cx + 15 + x3 = 0 + 15

Reorder the terms:
-15 + 15 + bx2 + cx + x3 = 0 + 15

Combine like terms: -15 + 15 = 0
0 + bx2 + cx + x3 = 0 + 15
bx2 + cx + x3 = 0 + 15

Combine like terms: 0 + 15 = 15
bx2 + cx + x3 = 15

Add '-1cx' to each side of the equation.
bx2 + cx + -1cx + x3 = 15 + -1cx

Combine like terms: cx + -1cx = 0
bx2 + 0 + x3 = 15 + -1cx
bx2 + x3 = 15 + -1cx

Add '-1x3' to each side of the equation.
bx2 + x3 + -1x3 = 15 + -1cx + -1x3

Combine like terms: x3 + -1x3 = 0
bx2 + 0 = 15 + -1cx + -1x3
bx2 = 15 + -1cx + -1x3

Divide each side by 'x2'.
b = 15x-2 + -1cx-1 + -1x

Simplifying
b = 15x-2 + -1cx-1 + -1x

Reorder the terms:
b = -1cx-1 + 15x-2 + -1x

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