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

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


Simplifying
(3 + -4x + -1x2) * x + -5(-1x2 + -4x + 3) = 0

Reorder the terms for easier multiplication:
x(3 + -4x + -1x2) + -5(-1x2 + -4x + 3) = 0
(3 * x + -4x * x + -1x2 * x) + -5(-1x2 + -4x + 3) = 0
(3x + -4x2 + -1x3) + -5(-1x2 + -4x + 3) = 0

Reorder the terms:
3x + -4x2 + -1x3 + -5(3 + -4x + -1x2) = 0
3x + -4x2 + -1x3 + (3 * -5 + -4x * -5 + -1x2 * -5) = 0
3x + -4x2 + -1x3 + (-15 + 20x + 5x2) = 0

Reorder the terms:
-15 + 3x + 20x + -4x2 + 5x2 + -1x3 = 0

Combine like terms: 3x + 20x = 23x
-15 + 23x + -4x2 + 5x2 + -1x3 = 0

Combine like terms: -4x2 + 5x2 = 1x2
-15 + 23x + 1x2 + -1x3 = 0

Solving
-15 + 23x + 1x2 + -1x3 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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