Ax^3+bx^2+cx+d=0

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Solution for Ax^3+bx^2+cx+d=0 equation:


Simplifying
Ax3 + bx2 + cx + d = 0

Reorder the terms:
bx2 + cx + d + x3A = 0

Solving
bx2 + cx + d + x3A = 0

Solving for variable 'b'.

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

Add '-1cx' to each side of the equation.
bx2 + cx + d + -1cx + x3A = 0 + -1cx

Reorder the terms:
bx2 + cx + -1cx + d + x3A = 0 + -1cx

Combine like terms: cx + -1cx = 0
bx2 + 0 + d + x3A = 0 + -1cx
bx2 + d + x3A = 0 + -1cx
Remove the zero:
bx2 + d + x3A = -1cx

Add '-1d' to each side of the equation.
bx2 + d + -1d + x3A = -1cx + -1d

Combine like terms: d + -1d = 0
bx2 + 0 + x3A = -1cx + -1d
bx2 + x3A = -1cx + -1d

Add '-1x3A' to each side of the equation.
bx2 + x3A + -1x3A = -1cx + -1d + -1x3A

Combine like terms: x3A + -1x3A = 0
bx2 + 0 = -1cx + -1d + -1x3A
bx2 = -1cx + -1d + -1x3A

Divide each side by 'x2'.
b = -1cx-1 + -1dx-2 + -1xA

Simplifying
b = -1cx-1 + -1dx-2 + -1xA

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