b^2+18b-29=0

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Solution for b^2+18b-29=0 equation:


Simplifying
b2 + 18b + -29 = 0

Reorder the terms:
-29 + 18b + b2 = 0

Solving
-29 + 18b + b2 = 0

Solving for variable 'b'.

Begin completing the square.

Move the constant term to the right:

Add '29' to each side of the equation.
-29 + 18b + 29 + b2 = 0 + 29

Reorder the terms:
-29 + 29 + 18b + b2 = 0 + 29

Combine like terms: -29 + 29 = 0
0 + 18b + b2 = 0 + 29
18b + b2 = 0 + 29

Combine like terms: 0 + 29 = 29
18b + b2 = 29

The b term is 18b.  Take half its coefficient (9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
18b + 81 + b2 = 29 + 81

Reorder the terms:
81 + 18b + b2 = 29 + 81

Combine like terms: 29 + 81 = 110
81 + 18b + b2 = 110

Factor a perfect square on the left side:
(b + 9)(b + 9) = 110

Calculate the square root of the right side: 10.488088482

Break this problem into two subproblems by setting 
(b + 9) equal to 10.488088482 and -10.488088482.

Subproblem 1

b + 9 = 10.488088482 Simplifying b + 9 = 10.488088482 Reorder the terms: 9 + b = 10.488088482 Solving 9 + b = 10.488088482 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + b = 10.488088482 + -9 Combine like terms: 9 + -9 = 0 0 + b = 10.488088482 + -9 b = 10.488088482 + -9 Combine like terms: 10.488088482 + -9 = 1.488088482 b = 1.488088482 Simplifying b = 1.488088482

Subproblem 2

b + 9 = -10.488088482 Simplifying b + 9 = -10.488088482 Reorder the terms: 9 + b = -10.488088482 Solving 9 + b = -10.488088482 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + b = -10.488088482 + -9 Combine like terms: 9 + -9 = 0 0 + b = -10.488088482 + -9 b = -10.488088482 + -9 Combine like terms: -10.488088482 + -9 = -19.488088482 b = -19.488088482 Simplifying b = -19.488088482

Solution

The solution to the problem is based on the solutions from the subproblems. b = {1.488088482, -19.488088482}

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