9b^2-17b-34=0

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Solution for 9b^2-17b-34=0 equation:


Simplifying
9b2 + -17b + -34 = 0

Reorder the terms:
-34 + -17b + 9b2 = 0

Solving
-34 + -17b + 9b2 = 0

Solving for variable 'b'.

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

Divide each side by '9'.
-3.777777778 + -1.888888889b + b2 = 0

Move the constant term to the right:

Add '3.777777778' to each side of the equation.
-3.777777778 + -1.888888889b + 3.777777778 + b2 = 0 + 3.777777778

Reorder the terms:
-3.777777778 + 3.777777778 + -1.888888889b + b2 = 0 + 3.777777778

Combine like terms: -3.777777778 + 3.777777778 = 0.000000000
0.000000000 + -1.888888889b + b2 = 0 + 3.777777778
-1.888888889b + b2 = 0 + 3.777777778

Combine like terms: 0 + 3.777777778 = 3.777777778
-1.888888889b + b2 = 3.777777778

The b term is -1.888888889b.  Take half its coefficient (-0.9444444445).
Square it (0.8919753087) and add it to both sides.

Add '0.8919753087' to each side of the equation.
-1.888888889b + 0.8919753087 + b2 = 3.777777778 + 0.8919753087

Reorder the terms:
0.8919753087 + -1.888888889b + b2 = 3.777777778 + 0.8919753087

Combine like terms: 3.777777778 + 0.8919753087 = 4.6697530867
0.8919753087 + -1.888888889b + b2 = 4.6697530867

Factor a perfect square on the left side:
(b + -0.9444444445)(b + -0.9444444445) = 4.6697530867

Calculate the square root of the right side: 2.160961149

Break this problem into two subproblems by setting 
(b + -0.9444444445) equal to 2.160961149 and -2.160961149.

Subproblem 1

b + -0.9444444445 = 2.160961149 Simplifying b + -0.9444444445 = 2.160961149 Reorder the terms: -0.9444444445 + b = 2.160961149 Solving -0.9444444445 + b = 2.160961149 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '0.9444444445' to each side of the equation. -0.9444444445 + 0.9444444445 + b = 2.160961149 + 0.9444444445 Combine like terms: -0.9444444445 + 0.9444444445 = 0.0000000000 0.0000000000 + b = 2.160961149 + 0.9444444445 b = 2.160961149 + 0.9444444445 Combine like terms: 2.160961149 + 0.9444444445 = 3.1054055935 b = 3.1054055935 Simplifying b = 3.1054055935

Subproblem 2

b + -0.9444444445 = -2.160961149 Simplifying b + -0.9444444445 = -2.160961149 Reorder the terms: -0.9444444445 + b = -2.160961149 Solving -0.9444444445 + b = -2.160961149 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '0.9444444445' to each side of the equation. -0.9444444445 + 0.9444444445 + b = -2.160961149 + 0.9444444445 Combine like terms: -0.9444444445 + 0.9444444445 = 0.0000000000 0.0000000000 + b = -2.160961149 + 0.9444444445 b = -2.160961149 + 0.9444444445 Combine like terms: -2.160961149 + 0.9444444445 = -1.2165167045 b = -1.2165167045 Simplifying b = -1.2165167045

Solution

The solution to the problem is based on the solutions from the subproblems. b = {3.1054055935, -1.2165167045}

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