x(20-2x)(16-2x)-400=0

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Solution for x(20-2x)(16-2x)-400=0 equation: 


Simplifying
x(20 + -2x)(16 + -2x) + -400 = 0

Multiply (20 + -2x) * (16 + -2x)
x(20(16 + -2x) + -2x * (16 + -2x)) + -400 = 0
x((16 * 20 + -2x * 20) + -2x * (16 + -2x)) + -400 = 0
x((320 + -40x) + -2x * (16 + -2x)) + -400 = 0
x(320 + -40x + (16 * -2x + -2x * -2x)) + -400 = 0
x(320 + -40x + (-32x + 4x2)) + -400 = 0

Combine like terms: -40x + -32x = -72x
x(320 + -72x + 4x2) + -400 = 0
(320 * x + -72x * x + 4x2 * x) + -400 = 0
(320x + -72x2 + 4x3) + -400 = 0

Reorder the terms:
-400 + 320x + -72x2 + 4x3 = 0

Solving
-400 + 320x + -72x2 + 4x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '4'.
4(-100 + 80x + -18x2 + x3) = 0

Ignore the factor 4.

Subproblem 1
Set the factor '(-100 + 80x + -18x2 + x3)' equal to zero and attempt to solve:

Simplifying
-100 + 80x + -18x2 + x3 = 0

Solving
-100 + 80x + -18x2 + x3 = 0

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

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