(x^3+5x-8)+(-3x^3-4x^2+2x+3)=0

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Solution for (x^3+5x-8)+(-3x^3-4x^2+2x+3)=0 equation: 


Simplifying
(x3 + 5x + -8) + (-3x3 + -4x2 + 2x + 3) = 0

Reorder the terms:
(-8 + 5x + x3) + (-3x3 + -4x2 + 2x + 3) = 0

Remove parenthesis around (-8 + 5x + x3)
-8 + 5x + x3 + (-3x3 + -4x2 + 2x + 3) = 0

Reorder the terms:
-8 + 5x + x3 + (3 + 2x + -4x2 + -3x3) = 0

Remove parenthesis around (3 + 2x + -4x2 + -3x3)
-8 + 5x + x3 + 3 + 2x + -4x2 + -3x3 = 0

Reorder the terms:
-8 + 3 + 5x + 2x + -4x2 + x3 + -3x3 = 0

Combine like terms: -8 + 3 = -5
-5 + 5x + 2x + -4x2 + x3 + -3x3 = 0

Combine like terms: 5x + 2x = 7x
-5 + 7x + -4x2 + x3 + -3x3 = 0

Combine like terms: x3 + -3x3 = -2x3
-5 + 7x + -4x2 + -2x3 = 0

Solving
-5 + 7x + -4x2 + -2x3 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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