36b^2-24b-21=0

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Solution for 36b^2-24b-21=0 equation:


Simplifying
36b2 + -24b + -21 = 0

Reorder the terms:
-21 + -24b + 36b2 = 0

Solving
-21 + -24b + 36b2 = 0

Solving for variable 'b'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-7 + -8b + 12b2) = 0

Factor a trinomial.
3((-1 + -2b)(7 + -6b)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-1 + -2b)' equal to zero and attempt to solve: Simplifying -1 + -2b = 0 Solving -1 + -2b = 0 Move all terms containing b to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -2b = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2b = 0 + 1 -2b = 0 + 1 Combine like terms: 0 + 1 = 1 -2b = 1 Divide each side by '-2'. b = -0.5 Simplifying b = -0.5

Subproblem 2

Set the factor '(7 + -6b)' equal to zero and attempt to solve: Simplifying 7 + -6b = 0 Solving 7 + -6b = 0 Move all terms containing b to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -6b = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -6b = 0 + -7 -6b = 0 + -7 Combine like terms: 0 + -7 = -7 -6b = -7 Divide each side by '-6'. b = 1.166666667 Simplifying b = 1.166666667

Solution

b = {-0.5, 1.166666667}

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