7x(x-4)-2x(8x^2-4x+3)=-399

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Solution for 7x(x-4)-2x(8x^2-4x+3)=-399 equation: 


Simplifying
7x(x + -4) + -2x(8x2 + -4x + 3) = -399

Reorder the terms:
7x(-4 + x) + -2x(8x2 + -4x + 3) = -399
(-4 * 7x + x * 7x) + -2x(8x2 + -4x + 3) = -399
(-28x + 7x2) + -2x(8x2 + -4x + 3) = -399

Reorder the terms:
-28x + 7x2 + -2x(3 + -4x + 8x2) = -399
-28x + 7x2 + (3 * -2x + -4x * -2x + 8x2 * -2x) = -399
-28x + 7x2 + (-6x + 8x2 + -16x3) = -399

Reorder the terms:
-28x + -6x + 7x2 + 8x2 + -16x3 = -399

Combine like terms: -28x + -6x = -34x
-34x + 7x2 + 8x2 + -16x3 = -399

Combine like terms: 7x2 + 8x2 = 15x2
-34x + 15x2 + -16x3 = -399

Solving
-34x + 15x2 + -16x3 = -399

Solving for variable 'x'.

Reorder the terms:
399 + -34x + 15x2 + -16x3 = -399 + 399

Combine like terms: -399 + 399 = 0
399 + -34x + 15x2 + -16x3 = 0

The solution to this equation could not be determined.

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