(7b+4b)(7b-4b)=

Solution for (7b+4b)(7b-4b)= equation:

Simplifying
(7b + 4b)(7b + -4b) = 0

Combine like terms: 7b + 4b = 11b
(11b)(7b + -4b) = 0

Remove parenthesis around (11b)
11b(7b + -4b) = 0

Combine like terms: 7b + -4b = 3b
11b(3b) = 0

Remove parenthesis around (3b)
11b * 3b = 0

Reorder the terms for easier multiplication:
11 * 3b * b = 0

Multiply 11 * 3
33b * b = 0

Multiply b * b
33b2 = 0

Solving
33b2 = 0

Solving for variable 'b'.

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

Divide each side by '33'.
b2 = 0

Simplifying
b2 = 0

Take the square root of each side:
b = {0}