0=-4-y+x^2

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Solution for 0=-4-y+x^2 equation: 


Simplifying
0 = -4 + -1y + x2

Reorder the terms:
0 = -4 + x2 + -1y

Solving
0 = -4 + x2 + -1y

Solving for variable 'x'.

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

Add '-1x2' to each side of the equation.
0 + -1x2 = -4 + x2 + -1x2 + -1y
Remove the zero:
-1x2 = -4 + x2 + -1x2 + -1y

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

Divide each side by '-1'.
x2 = 4 + y

Simplifying
x2 = 4 + y

Reorder the terms:
-4 + x2 + -1y = 4 + y + -4 + -1y

Reorder the terms:
-4 + x2 + -1y = 4 + -4 + y + -1y

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

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

The solution to this equation could not be determined.

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