(x^2+y^2)+(-x^2+y^2)=

Solution for (x^2+y^2)+(-x^2+y^2)= equation:

Simplifying
(x2 + y2) + (-1x2 + y2) = 0

Remove parenthesis around (x2 + y2)
x2 + y2 + (-1x2 + y2) = 0

Remove parenthesis around (-1x2 + y2)
x2 + y2 + -1x2 + y2 = 0

Reorder the terms:
x2 + -1x2 + y2 + y2 = 0

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

Combine like terms: y2 + y2 = 2y2
2y2 = 0

Solving
2y2 = 0

Solving for variable 'y'.

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

Divide each side by '2'.
y2 = 0

Simplifying
y2 = 0

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