x^2-4x-21=y

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


Simplifying
x2 + -4x + -21 = y

Reorder the terms:
-21 + -4x + x2 = y

Solving
-21 + -4x + x2 = y

Solving for variable 'x'.

Combine like terms: y + -1y = 0
-21 + -4x + x2 + -1y = 0

The solution to this equation could not be determined.

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