(3x^3+4x^2)+(-15x-20)=0

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Solution for (3x^3+4x^2)+(-15x-20)=0 equation: 


Simplifying
(3x3 + 4x2) + (-15x + -20) = 0

Reorder the terms:
(4x2 + 3x3) + (-15x + -20) = 0

Remove parenthesis around (4x2 + 3x3)
4x2 + 3x3 + (-15x + -20) = 0

Reorder the terms:
4x2 + 3x3 + (-20 + -15x) = 0

Remove parenthesis around (-20 + -15x)
4x2 + 3x3 + -20 + -15x = 0

Reorder the terms:
-20 + -15x + 4x2 + 3x3 = 0

Solving
-20 + -15x + 4x2 + 3x3 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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