4b^2+9b-29=0

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Solution for 4b^2+9b-29=0 equation:


Simplifying
4b2 + 9b + -29 = 0

Reorder the terms:
-29 + 9b + 4b2 = 0

Solving
-29 + 9b + 4b2 = 0

Solving for variable 'b'.

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

Divide each side by '4'.
-7.25 + 2.25b + b2 = 0

Move the constant term to the right:

Add '7.25' to each side of the equation.
-7.25 + 2.25b + 7.25 + b2 = 0 + 7.25

Reorder the terms:
-7.25 + 7.25 + 2.25b + b2 = 0 + 7.25

Combine like terms: -7.25 + 7.25 = 0.00
0.00 + 2.25b + b2 = 0 + 7.25
2.25b + b2 = 0 + 7.25

Combine like terms: 0 + 7.25 = 7.25
2.25b + b2 = 7.25

The b term is 2.25b.  Take half its coefficient (1.125).
Square it (1.265625) and add it to both sides.

Add '1.265625' to each side of the equation.
2.25b + 1.265625 + b2 = 7.25 + 1.265625

Reorder the terms:
1.265625 + 2.25b + b2 = 7.25 + 1.265625

Combine like terms: 7.25 + 1.265625 = 8.515625
1.265625 + 2.25b + b2 = 8.515625

Factor a perfect square on the left side:
(b + 1.125)(b + 1.125) = 8.515625

Calculate the square root of the right side: 2.918154382

Break this problem into two subproblems by setting 
(b + 1.125) equal to 2.918154382 and -2.918154382.

Subproblem 1

b + 1.125 = 2.918154382 Simplifying b + 1.125 = 2.918154382 Reorder the terms: 1.125 + b = 2.918154382 Solving 1.125 + b = 2.918154382 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-1.125' to each side of the equation. 1.125 + -1.125 + b = 2.918154382 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + b = 2.918154382 + -1.125 b = 2.918154382 + -1.125 Combine like terms: 2.918154382 + -1.125 = 1.793154382 b = 1.793154382 Simplifying b = 1.793154382

Subproblem 2

b + 1.125 = -2.918154382 Simplifying b + 1.125 = -2.918154382 Reorder the terms: 1.125 + b = -2.918154382 Solving 1.125 + b = -2.918154382 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-1.125' to each side of the equation. 1.125 + -1.125 + b = -2.918154382 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + b = -2.918154382 + -1.125 b = -2.918154382 + -1.125 Combine like terms: -2.918154382 + -1.125 = -4.043154382 b = -4.043154382 Simplifying b = -4.043154382

Solution

The solution to the problem is based on the solutions from the subproblems. b = {1.793154382, -4.043154382}

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