2b^2-19b+36=0

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Solution for 2b^2-19b+36=0 equation:


Simplifying
2b2 + -19b + 36 = 0

Reorder the terms:
36 + -19b + 2b2 = 0

Solving
36 + -19b + 2b2 = 0

Solving for variable 'b'.

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
18 + -9.5b + b2 = 0

Move the constant term to the right:

Add '-18' to each side of the equation.
18 + -9.5b + -18 + b2 = 0 + -18

Reorder the terms:
18 + -18 + -9.5b + b2 = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -9.5b + b2 = 0 + -18
-9.5b + b2 = 0 + -18

Combine like terms: 0 + -18 = -18
-9.5b + b2 = -18

The b term is -9.5b.  Take half its coefficient (-4.75).
Square it (22.5625) and add it to both sides.

Add '22.5625' to each side of the equation.
-9.5b + 22.5625 + b2 = -18 + 22.5625

Reorder the terms:
22.5625 + -9.5b + b2 = -18 + 22.5625

Combine like terms: -18 + 22.5625 = 4.5625
22.5625 + -9.5b + b2 = 4.5625

Factor a perfect square on the left side:
(b + -4.75)(b + -4.75) = 4.5625

Calculate the square root of the right side: 2.136000936

Break this problem into two subproblems by setting 
(b + -4.75) equal to 2.136000936 and -2.136000936.

Subproblem 1

b + -4.75 = 2.136000936 Simplifying b + -4.75 = 2.136000936 Reorder the terms: -4.75 + b = 2.136000936 Solving -4.75 + b = 2.136000936 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + b = 2.136000936 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + b = 2.136000936 + 4.75 b = 2.136000936 + 4.75 Combine like terms: 2.136000936 + 4.75 = 6.886000936 b = 6.886000936 Simplifying b = 6.886000936

Subproblem 2

b + -4.75 = -2.136000936 Simplifying b + -4.75 = -2.136000936 Reorder the terms: -4.75 + b = -2.136000936 Solving -4.75 + b = -2.136000936 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + b = -2.136000936 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + b = -2.136000936 + 4.75 b = -2.136000936 + 4.75 Combine like terms: -2.136000936 + 4.75 = 2.613999064 b = 2.613999064 Simplifying b = 2.613999064

Solution

The solution to the problem is based on the solutions from the subproblems. b = {6.886000936, 2.613999064}

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