21x(4x+20y)-(20x+20y)=

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Solution for 21x(4x+20y)-(20x+20y)= equation: 


Simplifying
21x(4x + 20y) + -1(20x + 20y) = 0
(4x * 21x + 20y * 21x) + -1(20x + 20y) = 0

Reorder the terms:
(420xy + 84x2) + -1(20x + 20y) = 0
(420xy + 84x2) + -1(20x + 20y) = 0
420xy + 84x2 + (20x * -1 + 20y * -1) = 0
420xy + 84x2 + (-20x + -20y) = 0

Reorder the terms:
-20x + 420xy + 84x2 + -20y = 0

Solving
-20x + 420xy + 84x2 + -20y = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '4'.
4(-5x + 105xy + 21x2 + -5y) = 0

Ignore the factor 4.

Subproblem 1
Set the factor '(-5x + 105xy + 21x2 + -5y)' equal to zero and attempt to solve:

Simplifying
-5x + 105xy + 21x2 + -5y = 0

Solving
-5x + 105xy + 21x2 + -5y = 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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