4=100y^2

Solution for 4=100y^2 equation:

Simplifying
4 = 100y2

Solving
4 = 100y2

Solving for variable 'y'.

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

Add '-100y2' to each side of the equation.
4 + -100y2 = 100y2 + -100y2

Combine like terms: 100y2 + -100y2 = 0
4 + -100y2 = 0

Add '-4' to each side of the equation.
4 + -4 + -100y2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -100y2 = 0 + -4
-100y2 = 0 + -4

Combine like terms: 0 + -4 = -4
-100y2 = -4

Divide each side by '-100'.
y2 = 0.04

Simplifying
y2 = 0.04

Take the square root of each side:
y = {-0.2, 0.2}