2b^2=9b+5

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Solution for 2b^2=9b+5 equation:


Simplifying
2b2 = 9b + 5

Reorder the terms:
2b2 = 5 + 9b

Solving
2b2 = 5 + 9b

Solving for variable 'b'.

Reorder the terms:
-5 + -9b + 2b2 = 5 + 9b + -5 + -9b

Reorder the terms:
-5 + -9b + 2b2 = 5 + -5 + 9b + -9b

Combine like terms: 5 + -5 = 0
-5 + -9b + 2b2 = 0 + 9b + -9b
-5 + -9b + 2b2 = 9b + -9b

Combine like terms: 9b + -9b = 0
-5 + -9b + 2b2 = 0

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

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 '(5 + -1b)' equal to zero and attempt to solve: Simplifying 5 + -1b = 0 Solving 5 + -1b = 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 + -1b = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1b = 0 + -5 -1b = 0 + -5 Combine like terms: 0 + -5 = -5 -1b = -5 Divide each side by '-1'. b = 5 Simplifying b = 5

Solution

b = {-0.5, 5}

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