(2x^2+5x)(20x^2-11x-4)=0

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Solution for (2x^2+5x)(20x^2-11x-4)=0 equation: 


Simplifying
(2x2 + 5x)(20x2 + -11x + -4) = 0

Reorder the terms:
(5x + 2x2)(20x2 + -11x + -4) = 0

Reorder the terms:
(5x + 2x2)(-4 + -11x + 20x2) = 0

Multiply (5x + 2x2) * (-4 + -11x + 20x2)
(5x * (-4 + -11x + 20x2) + 2x2 * (-4 + -11x + 20x2)) = 0
((-4 * 5x + -11x * 5x + 20x2 * 5x) + 2x2 * (-4 + -11x + 20x2)) = 0
((-20x + -55x2 + 100x3) + 2x2 * (-4 + -11x + 20x2)) = 0
(-20x + -55x2 + 100x3 + (-4 * 2x2 + -11x * 2x2 + 20x2 * 2x2)) = 0
(-20x + -55x2 + 100x3 + (-8x2 + -22x3 + 40x4)) = 0

Reorder the terms:
(-20x + -55x2 + -8x2 + 100x3 + -22x3 + 40x4) = 0

Combine like terms: -55x2 + -8x2 = -63x2
(-20x + -63x2 + 100x3 + -22x3 + 40x4) = 0

Combine like terms: 100x3 + -22x3 = 78x3
(-20x + -63x2 + 78x3 + 40x4) = 0

Solving
-20x + -63x2 + 78x3 + 40x4 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x'.
x(-20 + -63x + 78x2 + 40x3) = 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 '(-20 + -63x + 78x2 + 40x3)' equal to zero and attempt to solve:

Simplifying
-20 + -63x + 78x2 + 40x3 = 0

Solving
-20 + -63x + 78x2 + 40x3 = 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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