(3x^2+7x-20)(x^2-4x)=

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Solution for (3x^2+7x-20)(x^2-4x)= equation: 


Simplifying
(3x2 + 7x + -20)(x2 + -4x) = 0

Reorder the terms:
(-20 + 7x + 3x2)(x2 + -4x) = 0

Reorder the terms:
(-20 + 7x + 3x2)(-4x + x2) = 0

Multiply (-20 + 7x + 3x2) * (-4x + x2)
(-20(-4x + x2) + 7x * (-4x + x2) + 3x2 * (-4x + x2)) = 0
((-4x * -20 + x2 * -20) + 7x * (-4x + x2) + 3x2 * (-4x + x2)) = 0
((80x + -20x2) + 7x * (-4x + x2) + 3x2 * (-4x + x2)) = 0
(80x + -20x2 + (-4x * 7x + x2 * 7x) + 3x2 * (-4x + x2)) = 0
(80x + -20x2 + (-28x2 + 7x3) + 3x2 * (-4x + x2)) = 0
(80x + -20x2 + -28x2 + 7x3 + (-4x * 3x2 + x2 * 3x2)) = 0
(80x + -20x2 + -28x2 + 7x3 + (-12x3 + 3x4)) = 0

Combine like terms: -20x2 + -28x2 = -48x2
(80x + -48x2 + 7x3 + -12x3 + 3x4) = 0

Combine like terms: 7x3 + -12x3 = -5x3
(80x + -48x2 + -5x3 + 3x4) = 0

Solving
80x + -48x2 + -5x3 + 3x4 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x'.
x(80 + -48x + -5x2 + 3x3) = 0


Subproblem 1
Set the factor 'x' equal to zero and attempt to solve:

Simplifying
x = 0

Solving
x = 0

Move all terms containing x to the left, all other terms to the right.

Simplifying
x = 0

Subproblem 2
Set the factor '(80 + -48x + -5x2 + 3x3)' equal to zero and attempt to solve:

Simplifying
80 + -48x + -5x2 + 3x3 = 0

Solving
80 + -48x + -5x2 + 3x3 = 0

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Solution
x = {0}

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