y^2-x^2=-16

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Solution for y^2-x^2=-16 equation: 


Simplifying
y2 + -1x2 = -16

Reorder the terms:
-1x2 + y2 = -16

Solving
-1x2 + y2 = -16

Solving for variable 'x'.

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

Add '-1y2' to each side of the equation.
-1x2 + y2 + -1y2 = -16 + -1y2

Combine like terms: y2 + -1y2 = 0
-1x2 + 0 = -16 + -1y2
-1x2 = -16 + -1y2

Divide each side by '-1'.
x2 = 16 + y2

Simplifying
x2 = 16 + y2

Reorder the terms:
-16 + x2 + -1y2 = 16 + y2 + -16 + -1y2

Reorder the terms:
-16 + x2 + -1y2 = 16 + -16 + y2 + -1y2

Combine like terms: 16 + -16 = 0
-16 + x2 + -1y2 = 0 + y2 + -1y2
-16 + x2 + -1y2 = y2 + -1y2

Combine like terms: y2 + -1y2 = 0
-16 + x2 + -1y2 = 0

The solution to this equation could not be determined.

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