-b^2+18b-77=0

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Solution for -b^2+18b-77=0 equation:


Simplifying
-1b2 + 18b + -77 = 0

Reorder the terms:
-77 + 18b + -1b2 = 0

Solving
-77 + 18b + -1b2 = 0

Solving for variable 'b'.

Factor a trinomial.
(-11 + b)(7 + -1b) = 0

Subproblem 1

Set the factor '(-11 + b)' equal to zero and attempt to solve: Simplifying -11 + b = 0 Solving -11 + b = 0 Move all terms containing b to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + b = 0 + 11 Combine like terms: -11 + 11 = 0 0 + b = 0 + 11 b = 0 + 11 Combine like terms: 0 + 11 = 11 b = 11 Simplifying b = 11

Subproblem 2

Set the factor '(7 + -1b)' equal to zero and attempt to solve: Simplifying 7 + -1b = 0 Solving 7 + -1b = 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 + -1b = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1b = 0 + -7 -1b = 0 + -7 Combine like terms: 0 + -7 = -7 -1b = -7 Divide each side by '-1'. b = 7 Simplifying b = 7

Solution

b = {11, 7}

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