20=0.58v^2

Solution for 20=0.58v^2 equation:

Simplifying
20 = 0.58v2

Solving
20 = 0.58v2

Solving for variable 'v'.

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

Add '-0.58v2' to each side of the equation.
20 + -0.58v2 = 0.58v2 + -0.58v2

Combine like terms: 0.58v2 + -0.58v2 = 0.00
20 + -0.58v2 = 0.00

Add '-20' to each side of the equation.
20 + -20 + -0.58v2 = 0.00 + -20

Combine like terms: 20 + -20 = 0
0 + -0.58v2 = 0.00 + -20
-0.58v2 = 0.00 + -20

Combine like terms: 0.00 + -20 = -20
-0.58v2 = -20

Divide each side by '-0.58'.
v2 = 34.48275862

Simplifying
v2 = 34.48275862

Take the square root of each side:
v = {-5.872202195, 5.872202195}