((5x^3)-(4x^2)+6x+8)(9x+7)=0

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Solution for ((5x^3)-(4x^2)+6x+8)(9x+7)=0 equation: 


Simplifying
((5x3) + -1(4x2) + 6x + 8)(9x + 7) = 0

Remove parenthesis around (4x2)
((5x3) + -1 * 4x2 + 6x + 8)(9x + 7) = 0

Multiply -1 * 4
((5x3) + -4x2 + 6x + 8)(9x + 7) = 0

Reorder the terms:
(8 + 6x + -4x2 + (5x3))(9x + 7) = 0

Reorder the terms:
(8 + 6x + -4x2 + (5x3))(7 + 9x) = 0

Multiply (8 + 6x + -4x2 + (5x3)) * (7 + 9x)
(8(7 + 9x) + 6x * (7 + 9x) + -4x2 * (7 + 9x) + (5x3)(7 + 9x)) = 0
((7 * 8 + 9x * 8) + 6x * (7 + 9x) + -4x2 * (7 + 9x) + (5x3)(7 + 9x)) = 0
((56 + 72x) + 6x * (7 + 9x) + -4x2 * (7 + 9x) + (5x3)(7 + 9x)) = 0
(56 + 72x + (7 * 6x + 9x * 6x) + -4x2 * (7 + 9x) + (5x3)(7 + 9x)) = 0
(56 + 72x + (42x + 54x2) + -4x2 * (7 + 9x) + (5x3)(7 + 9x)) = 0
(56 + 72x + 42x + 54x2 + (7 * -4x2 + 9x * -4x2) + (5x3)(7 + 9x)) = 0
(56 + 72x + 42x + 54x2 + (-28x2 + -36x3) + (5x3)(7 + 9x)) = 0
(56 + 72x + 42x + 54x2 + -28x2 + -36x3 + (7 * 5x3 + 9x * 5x3)) = 0
(56 + 72x + 42x + 54x2 + -28x2 + -36x3 + (35x3 + 45x4)) = 0

Combine like terms: 72x + 42x = 114x
(56 + 114x + 54x2 + -28x2 + -36x3 + 35x3 + 45x4) = 0

Combine like terms: 54x2 + -28x2 = 26x2
(56 + 114x + 26x2 + -36x3 + 35x3 + 45x4) = 0

Combine like terms: -36x3 + 35x3 = -1x3
(56 + 114x + 26x2 + -1x3 + 45x4) = 0

Solving
56 + 114x + 26x2 + -1x3 + 45x4 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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