100=y^2

Solution for 100=y^2 equation:

Simplifying
100 = y2

Solving
100 = 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.
100 + -1y2 = y2 + -1y2

Combine like terms: y2 + -1y2 = 0
100 + -1y2 = 0

Add '-100' to each side of the equation.
100 + -100 + -1y2 = 0 + -100

Combine like terms: 100 + -100 = 0
0 + -1y2 = 0 + -100
-1y2 = 0 + -100

Combine like terms: 0 + -100 = -100
-1y2 = -100

Divide each side by '-1'.
y2 = 100

Simplifying
y2 = 100

Take the square root of each side:
y = {-10, 10}