(5b+6)(5b-6)=

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Solution for (5b+6)(5b-6)= equation:


Simplifying
(5b + 6)(5b + -6) = 0

Reorder the terms:
(6 + 5b)(5b + -6) = 0

Reorder the terms:
(6 + 5b)(-6 + 5b) = 0

Multiply (6 + 5b) * (-6 + 5b)
(6(-6 + 5b) + 5b * (-6 + 5b)) = 0
((-6 * 6 + 5b * 6) + 5b * (-6 + 5b)) = 0
((-36 + 30b) + 5b * (-6 + 5b)) = 0
(-36 + 30b + (-6 * 5b + 5b * 5b)) = 0
(-36 + 30b + (-30b + 25b2)) = 0

Combine like terms: 30b + -30b = 0
(-36 + 0 + 25b2) = 0
(-36 + 25b2) = 0

Solving
-36 + 25b2 = 0

Solving for variable 'b'.

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

Add '36' to each side of the equation.
-36 + 36 + 25b2 = 0 + 36

Combine like terms: -36 + 36 = 0
0 + 25b2 = 0 + 36
25b2 = 0 + 36

Combine like terms: 0 + 36 = 36
25b2 = 36

Divide each side by '25'.
b2 = 1.44

Simplifying
b2 = 1.44

Take the square root of each side:
b = {-1.2, 1.2}

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