(2-9v)(2+9v)=

Solution for (2-9v)(2+9v)= equation:

Simplifying
(2 + -9v)(2 + 9v) = 0

Multiply (2 + -9v) * (2 + 9v)
(2(2 + 9v) + -9v * (2 + 9v)) = 0
((2 * 2 + 9v * 2) + -9v * (2 + 9v)) = 0
((4 + 18v) + -9v * (2 + 9v)) = 0
(4 + 18v + (2 * -9v + 9v * -9v)) = 0
(4 + 18v + (-18v + -81v2)) = 0

Combine like terms: 18v + -18v = 0
(4 + 0 + -81v2) = 0
(4 + -81v2) = 0

Solving
4 + -81v2 = 0

Solving for variable 'v'.

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

Add '-4' to each side of the equation.
4 + -4 + -81v2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -81v2 = 0 + -4
-81v2 = 0 + -4

Combine like terms: 0 + -4 = -4
-81v2 = -4

Divide each side by '-81'.
v2 = 0.04938271605

Simplifying
v2 = 0.04938271605

Take the square root of each side:
v = {-0.222222222, 0.222222222}