-3+28=y^2

Solution for -3+28=y^2 equation:

Simplifying
-3 + 28 = y2

Combine like terms: -3 + 28 = 25
25 = y2

Solving
25 = y2

Solving for variable 'y'.

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

Add '-1y2' to each side of the equation.
25 + -1y2 = y2 + -1y2

Combine like terms: y2 + -1y2 = 0
25 + -1y2 = 0

Add '-25' to each side of the equation.
25 + -25 + -1y2 = 0 + -25

Combine like terms: 25 + -25 = 0
0 + -1y2 = 0 + -25
-1y2 = 0 + -25

Combine like terms: 0 + -25 = -25
-1y2 = -25

Divide each side by '-1'.
y2 = 25

Simplifying
y2 = 25

Take the square root of each side:
y = {-5, 5}