(6+u)(6-u)=

Solution for (6+u)(6-u)= equation:

Simplifying
(6 + u)(6 + -1u) = 0

Multiply (6 + u) * (6 + -1u)
(6(6 + -1u) + u(6 + -1u)) = 0
((6 * 6 + -1u * 6) + u(6 + -1u)) = 0
((36 + -6u) + u(6 + -1u)) = 0
(36 + -6u + (6 * u + -1u * u)) = 0
(36 + -6u + (6u + -1u2)) = 0

Combine like terms: -6u + 6u = 0
(36 + 0 + -1u2) = 0
(36 + -1u2) = 0

Solving
36 + -1u2 = 0

Solving for variable 'u'.

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

Add '-36' to each side of the equation.
36 + -36 + -1u2 = 0 + -36

Combine like terms: 36 + -36 = 0
0 + -1u2 = 0 + -36
-1u2 = 0 + -36

Combine like terms: 0 + -36 = -36
-1u2 = -36

Divide each side by '-1'.
u2 = 36

Simplifying
u2 = 36

Take the square root of each side:
u = {-6, 6}