.04h^2-16=0

Solution for .04h^2-16=0 equation:

Simplifying
0.04h2 + -16 = 0

Reorder the terms:
-16 + 0.04h2 = 0

Solving
-16 + 0.04h2 = 0

Solving for variable 'h'.

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

Add '16' to each side of the equation.
-16 + 16 + 0.04h2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + 0.04h2 = 0 + 16
0.04h2 = 0 + 16

Combine like terms: 0 + 16 = 16
0.04h2 = 16

Divide each side by '0.04'.
h2 = 400

Simplifying
h2 = 400

Take the square root of each side:
h = {-20, 20}