-4x^2(5x^2-21x-y)=

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Solution for -4x^2(5x^2-21x-y)= equation: 


Simplifying
-4x2(5x2 + -21x + -1y) = 0

Reorder the terms:
-4x2(-21x + 5x2 + -1y) = 0
(-21x * -4x2 + 5x2 * -4x2 + -1y * -4x2) = 0

Reorder the terms:
(4x2y + 84x3 + -20x4) = 0
(4x2y + 84x3 + -20x4) = 0

Solving
4x2y + 84x3 + -20x4 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '4x2'.
4x2(y + 21x + -5x2) = 0

Ignore the factor 4.

Subproblem 1
Set the factor 'x2' equal to zero and attempt to solve:

Simplifying
x2 = 0

Solving
x2 = 0

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

Simplifying
x2 = 0

Take the square root of each side:
x = {0}

Subproblem 2
Set the factor '(y + 21x + -5x2)' equal to zero and attempt to solve:

Simplifying
y + 21x + -5x2 = 0

Reorder the terms:
21x + -5x2 + y = 0

Solving
21x + -5x2 + y = 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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