28=4y^2

Solution for 28=4y^2 equation:

Simplifying
28 = 4y2

Solving
28 = 4y2

Solving for variable 'y'.

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

Add '-4y2' to each side of the equation.
28 + -4y2 = 4y2 + -4y2

Combine like terms: 4y2 + -4y2 = 0
28 + -4y2 = 0

Add '-28' to each side of the equation.
28 + -28 + -4y2 = 0 + -28

Combine like terms: 28 + -28 = 0
0 + -4y2 = 0 + -28
-4y2 = 0 + -28

Combine like terms: 0 + -28 = -28
-4y2 = -28

Divide each side by '-4'.
y2 = 7

Simplifying
y2 = 7

Take the square root of each side:
y = {-2.645751311, 2.645751311}