5b^2+22b+22=0

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Solution for 5b^2+22b+22=0 equation:


Simplifying
5b2 + 22b + 22 = 0

Reorder the terms:
22 + 22b + 5b2 = 0

Solving
22 + 22b + 5b2 = 0

Solving for variable 'b'.

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

Divide each side by '5'.
4.4 + 4.4b + b2 = 0

Move the constant term to the right:

Add '-4.4' to each side of the equation.
4.4 + 4.4b + -4.4 + b2 = 0 + -4.4

Reorder the terms:
4.4 + -4.4 + 4.4b + b2 = 0 + -4.4

Combine like terms: 4.4 + -4.4 = 0.0
0.0 + 4.4b + b2 = 0 + -4.4
4.4b + b2 = 0 + -4.4

Combine like terms: 0 + -4.4 = -4.4
4.4b + b2 = -4.4

The b term is 4.4b.  Take half its coefficient (2.2).
Square it (4.84) and add it to both sides.

Add '4.84' to each side of the equation.
4.4b + 4.84 + b2 = -4.4 + 4.84

Reorder the terms:
4.84 + 4.4b + b2 = -4.4 + 4.84

Combine like terms: -4.4 + 4.84 = 0.44
4.84 + 4.4b + b2 = 0.44

Factor a perfect square on the left side:
(b + 2.2)(b + 2.2) = 0.44

Calculate the square root of the right side: 0.663324958

Break this problem into two subproblems by setting 
(b + 2.2) equal to 0.663324958 and -0.663324958.

Subproblem 1

b + 2.2 = 0.663324958 Simplifying b + 2.2 = 0.663324958 Reorder the terms: 2.2 + b = 0.663324958 Solving 2.2 + b = 0.663324958 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-2.2' to each side of the equation. 2.2 + -2.2 + b = 0.663324958 + -2.2 Combine like terms: 2.2 + -2.2 = 0.0 0.0 + b = 0.663324958 + -2.2 b = 0.663324958 + -2.2 Combine like terms: 0.663324958 + -2.2 = -1.536675042 b = -1.536675042 Simplifying b = -1.536675042

Subproblem 2

b + 2.2 = -0.663324958 Simplifying b + 2.2 = -0.663324958 Reorder the terms: 2.2 + b = -0.663324958 Solving 2.2 + b = -0.663324958 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-2.2' to each side of the equation. 2.2 + -2.2 + b = -0.663324958 + -2.2 Combine like terms: 2.2 + -2.2 = 0.0 0.0 + b = -0.663324958 + -2.2 b = -0.663324958 + -2.2 Combine like terms: -0.663324958 + -2.2 = -2.863324958 b = -2.863324958 Simplifying b = -2.863324958

Solution

The solution to the problem is based on the solutions from the subproblems. b = {-1.536675042, -2.863324958}

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