(7b-2)(7b+2)=

Solution for (7b-2)(7b+2)= equation:

Simplifying
(7b + -2)(7b + 2) = 0

Reorder the terms:
(-2 + 7b)(7b + 2) = 0

Reorder the terms:
(-2 + 7b)(2 + 7b) = 0

Multiply (-2 + 7b) * (2 + 7b)
(-2(2 + 7b) + 7b * (2 + 7b)) = 0
((2 * -2 + 7b * -2) + 7b * (2 + 7b)) = 0
((-4 + -14b) + 7b * (2 + 7b)) = 0
(-4 + -14b + (2 * 7b + 7b * 7b)) = 0
(-4 + -14b + (14b + 49b2)) = 0

Combine like terms: -14b + 14b = 0
(-4 + 0 + 49b2) = 0
(-4 + 49b2) = 0

Solving
-4 + 49b2 = 0

Solving for variable 'b'.

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

Add '4' to each side of the equation.
-4 + 4 + 49b2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 49b2 = 0 + 4
49b2 = 0 + 4

Combine like terms: 0 + 4 = 4
49b2 = 4

Divide each side by '49'.
b2 = 0.08163265306

Simplifying
b2 = 0.08163265306

Take the square root of each side:
b = {-0.285714286, 0.285714286}