800=40v^2

Solution for 800=40v^2 equation:

Simplifying
800 = 40v2

Solving
800 = 40v2

Solving for variable 'v'.

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

Add '-40v2' to each side of the equation.
800 + -40v2 = 40v2 + -40v2

Combine like terms: 40v2 + -40v2 = 0
800 + -40v2 = 0

Add '-800' to each side of the equation.
800 + -800 + -40v2 = 0 + -800

Combine like terms: 800 + -800 = 0
0 + -40v2 = 0 + -800
-40v2 = 0 + -800

Combine like terms: 0 + -800 = -800
-40v2 = -800

Divide each side by '-40'.
v2 = 20

Simplifying
v2 = 20

Take the square root of each side:
v = {-4.472135955, 4.472135955}