=b^2+1.382b-1.654

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Solution for =b^2+1.382b-1.654 equation:


Simplifying
0 = b2 + 1.382b + -1.654

Reorder the terms:
0 = -1.654 + 1.382b + b2

Solving
0 = -1.654 + 1.382b + b2

Solving for variable 'b'.

Combine like terms: 0 + 1.654 = 1.654
1.654 + -1.382b + -1b2 = -1.654 + 1.382b + b2 + 1.654 + -1.382b + -1b2

Reorder the terms:
1.654 + -1.382b + -1b2 = -1.654 + 1.654 + 1.382b + -1.382b + b2 + -1b2

Combine like terms: -1.654 + 1.654 = 0.000
1.654 + -1.382b + -1b2 = 0.000 + 1.382b + -1.382b + b2 + -1b2
1.654 + -1.382b + -1b2 = 1.382b + -1.382b + b2 + -1b2

Combine like terms: 1.382b + -1.382b = 0.000
1.654 + -1.382b + -1b2 = 0.000 + b2 + -1b2
1.654 + -1.382b + -1b2 = b2 + -1b2

Combine like terms: b2 + -1b2 = 0
1.654 + -1.382b + -1b2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-1.654 + 1.382b + b2 = 0

Move the constant term to the right:

Add '1.654' to each side of the equation.
-1.654 + 1.382b + 1.654 + b2 = 0 + 1.654

Reorder the terms:
-1.654 + 1.654 + 1.382b + b2 = 0 + 1.654

Combine like terms: -1.654 + 1.654 = 0.000
0.000 + 1.382b + b2 = 0 + 1.654
1.382b + b2 = 0 + 1.654

Combine like terms: 0 + 1.654 = 1.654
1.382b + b2 = 1.654

The b term is 1.382b.  Take half its coefficient (0.691).
Square it (0.477481) and add it to both sides.

Add '0.477481' to each side of the equation.
1.382b + 0.477481 + b2 = 1.654 + 0.477481

Reorder the terms:
0.477481 + 1.382b + b2 = 1.654 + 0.477481

Combine like terms: 1.654 + 0.477481 = 2.131481
0.477481 + 1.382b + b2 = 2.131481

Factor a perfect square on the left side:
(b + 0.691)(b + 0.691) = 2.131481

Calculate the square root of the right side: 1.459959246

Break this problem into two subproblems by setting 
(b + 0.691) equal to 1.459959246 and -1.459959246.

Subproblem 1

b + 0.691 = 1.459959246 Simplifying b + 0.691 = 1.459959246 Reorder the terms: 0.691 + b = 1.459959246 Solving 0.691 + b = 1.459959246 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.691' to each side of the equation. 0.691 + -0.691 + b = 1.459959246 + -0.691 Combine like terms: 0.691 + -0.691 = 0.000 0.000 + b = 1.459959246 + -0.691 b = 1.459959246 + -0.691 Combine like terms: 1.459959246 + -0.691 = 0.768959246 b = 0.768959246 Simplifying b = 0.768959246

Subproblem 2

b + 0.691 = -1.459959246 Simplifying b + 0.691 = -1.459959246 Reorder the terms: 0.691 + b = -1.459959246 Solving 0.691 + b = -1.459959246 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.691' to each side of the equation. 0.691 + -0.691 + b = -1.459959246 + -0.691 Combine like terms: 0.691 + -0.691 = 0.000 0.000 + b = -1.459959246 + -0.691 b = -1.459959246 + -0.691 Combine like terms: -1.459959246 + -0.691 = -2.150959246 b = -2.150959246 Simplifying b = -2.150959246

Solution

The solution to the problem is based on the solutions from the subproblems. b = {0.768959246, -2.150959246}

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