b^2+14b+4=0

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Solution for b^2+14b+4=0 equation:


Simplifying
b2 + 14b + 4 = 0

Reorder the terms:
4 + 14b + b2 = 0

Solving
4 + 14b + b2 = 0

Solving for variable 'b'.

Begin completing the square.

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + 14b + -4 + b2 = 0 + -4

Reorder the terms:
4 + -4 + 14b + b2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 14b + b2 = 0 + -4
14b + b2 = 0 + -4

Combine like terms: 0 + -4 = -4
14b + b2 = -4

The b term is 14b.  Take half its coefficient (7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
14b + 49 + b2 = -4 + 49

Reorder the terms:
49 + 14b + b2 = -4 + 49

Combine like terms: -4 + 49 = 45
49 + 14b + b2 = 45

Factor a perfect square on the left side:
(b + 7)(b + 7) = 45

Calculate the square root of the right side: 6.708203933

Break this problem into two subproblems by setting 
(b + 7) equal to 6.708203933 and -6.708203933.

Subproblem 1

b + 7 = 6.708203933 Simplifying b + 7 = 6.708203933 Reorder the terms: 7 + b = 6.708203933 Solving 7 + b = 6.708203933 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + b = 6.708203933 + -7 Combine like terms: 7 + -7 = 0 0 + b = 6.708203933 + -7 b = 6.708203933 + -7 Combine like terms: 6.708203933 + -7 = -0.291796067 b = -0.291796067 Simplifying b = -0.291796067

Subproblem 2

b + 7 = -6.708203933 Simplifying b + 7 = -6.708203933 Reorder the terms: 7 + b = -6.708203933 Solving 7 + b = -6.708203933 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + b = -6.708203933 + -7 Combine like terms: 7 + -7 = 0 0 + b = -6.708203933 + -7 b = -6.708203933 + -7 Combine like terms: -6.708203933 + -7 = -13.708203933 b = -13.708203933 Simplifying b = -13.708203933

Solution

The solution to the problem is based on the solutions from the subproblems. b = {-0.291796067, -13.708203933}

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