(2b-5)(2b+6)=0

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Solution for (2b-5)(2b+6)=0 equation:


Simplifying
(2b + -5)(2b + 6) = 0

Reorder the terms:
(-5 + 2b)(2b + 6) = 0

Reorder the terms:
(-5 + 2b)(6 + 2b) = 0

Multiply (-5 + 2b) * (6 + 2b)
(-5(6 + 2b) + 2b * (6 + 2b)) = 0
((6 * -5 + 2b * -5) + 2b * (6 + 2b)) = 0
((-30 + -10b) + 2b * (6 + 2b)) = 0
(-30 + -10b + (6 * 2b + 2b * 2b)) = 0
(-30 + -10b + (12b + 4b2)) = 0

Combine like terms: -10b + 12b = 2b
(-30 + 2b + 4b2) = 0

Solving
-30 + 2b + 4b2 = 0

Solving for variable 'b'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-15 + b + 2b2) = 0

Factor a trinomial.
2((-3 + -1b)(5 + -2b)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-3 + -1b)' equal to zero and attempt to solve: Simplifying -3 + -1b = 0 Solving -3 + -1b = 0 Move all terms containing b to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1b = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1b = 0 + 3 -1b = 0 + 3 Combine like terms: 0 + 3 = 3 -1b = 3 Divide each side by '-1'. b = -3 Simplifying b = -3

Subproblem 2

Set the factor '(5 + -2b)' equal to zero and attempt to solve: Simplifying 5 + -2b = 0 Solving 5 + -2b = 0 Move all terms containing b to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -2b = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2b = 0 + -5 -2b = 0 + -5 Combine like terms: 0 + -5 = -5 -2b = -5 Divide each side by '-2'. b = 2.5 Simplifying b = 2.5

Solution

b = {-3, 2.5}

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