55b^2-26b-75=0

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Solution for 55b^2-26b-75=0 equation:


Simplifying
55b2 + -26b + -75 = 0

Reorder the terms:
-75 + -26b + 55b2 = 0

Solving
-75 + -26b + 55b2 = 0

Solving for variable 'b'.

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

Divide each side by '55'.
-1.363636364 + -0.4727272727b + b2 = 0

Move the constant term to the right:

Add '1.363636364' to each side of the equation.
-1.363636364 + -0.4727272727b + 1.363636364 + b2 = 0 + 1.363636364

Reorder the terms:
-1.363636364 + 1.363636364 + -0.4727272727b + b2 = 0 + 1.363636364

Combine like terms: -1.363636364 + 1.363636364 = 0.000000000
0.000000000 + -0.4727272727b + b2 = 0 + 1.363636364
-0.4727272727b + b2 = 0 + 1.363636364

Combine like terms: 0 + 1.363636364 = 1.363636364
-0.4727272727b + b2 = 1.363636364

The b term is -0.4727272727b.  Take half its coefficient (-0.2363636364).
Square it (0.05586776861) and add it to both sides.

Add '0.05586776861' to each side of the equation.
-0.4727272727b + 0.05586776861 + b2 = 1.363636364 + 0.05586776861

Reorder the terms:
0.05586776861 + -0.4727272727b + b2 = 1.363636364 + 0.05586776861

Combine like terms: 1.363636364 + 0.05586776861 = 1.41950413261
0.05586776861 + -0.4727272727b + b2 = 1.41950413261

Factor a perfect square on the left side:
(b + -0.2363636364)(b + -0.2363636364) = 1.41950413261

Calculate the square root of the right side: 1.191429449

Break this problem into two subproblems by setting 
(b + -0.2363636364) equal to 1.191429449 and -1.191429449.

Subproblem 1

b + -0.2363636364 = 1.191429449 Simplifying b + -0.2363636364 = 1.191429449 Reorder the terms: -0.2363636364 + b = 1.191429449 Solving -0.2363636364 + b = 1.191429449 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '0.2363636364' to each side of the equation. -0.2363636364 + 0.2363636364 + b = 1.191429449 + 0.2363636364 Combine like terms: -0.2363636364 + 0.2363636364 = 0.0000000000 0.0000000000 + b = 1.191429449 + 0.2363636364 b = 1.191429449 + 0.2363636364 Combine like terms: 1.191429449 + 0.2363636364 = 1.4277930854 b = 1.4277930854 Simplifying b = 1.4277930854

Subproblem 2

b + -0.2363636364 = -1.191429449 Simplifying b + -0.2363636364 = -1.191429449 Reorder the terms: -0.2363636364 + b = -1.191429449 Solving -0.2363636364 + b = -1.191429449 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '0.2363636364' to each side of the equation. -0.2363636364 + 0.2363636364 + b = -1.191429449 + 0.2363636364 Combine like terms: -0.2363636364 + 0.2363636364 = 0.0000000000 0.0000000000 + b = -1.191429449 + 0.2363636364 b = -1.191429449 + 0.2363636364 Combine like terms: -1.191429449 + 0.2363636364 = -0.9550658126 b = -0.9550658126 Simplifying b = -0.9550658126

Solution

The solution to the problem is based on the solutions from the subproblems. b = {1.4277930854, -0.9550658126}

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