b^2-b+2b=-1-b+3

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Solution for b^2-b+2b=-1-b+3 equation:


Simplifying
b2 + -1b + 2b = -1 + -1b + 3

Reorder the terms:
-1b + 2b + b2 = -1 + -1b + 3

Combine like terms: -1b + 2b = 1b
1b + b2 = -1 + -1b + 3

Reorder the terms:
1b + b2 = -1 + 3 + -1b

Combine like terms: -1 + 3 = 2
1b + b2 = 2 + -1b

Solving
1b + b2 = 2 + -1b

Solving for variable 'b'.

Reorder the terms:
-2 + 1b + b + b2 = 2 + -1b + -2 + b

Combine like terms: 1b + b = 2b
-2 + 2b + b2 = 2 + -1b + -2 + b

Reorder the terms:
-2 + 2b + b2 = 2 + -2 + -1b + b

Combine like terms: 2 + -2 = 0
-2 + 2b + b2 = 0 + -1b + b
-2 + 2b + b2 = -1b + b

Combine like terms: -1b + b = 0
-2 + 2b + b2 = 0

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 2b + 2 + b2 = 0 + 2

Reorder the terms:
-2 + 2 + 2b + b2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 2b + b2 = 0 + 2
2b + b2 = 0 + 2

Combine like terms: 0 + 2 = 2
2b + b2 = 2

The b term is 2b.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2b + 1 + b2 = 2 + 1

Reorder the terms:
1 + 2b + b2 = 2 + 1

Combine like terms: 2 + 1 = 3
1 + 2b + b2 = 3

Factor a perfect square on the left side:
(b + 1)(b + 1) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(b + 1) equal to 1.732050808 and -1.732050808.

Subproblem 1

b + 1 = 1.732050808 Simplifying b + 1 = 1.732050808 Reorder the terms: 1 + b = 1.732050808 Solving 1 + b = 1.732050808 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + b = 1.732050808 + -1 Combine like terms: 1 + -1 = 0 0 + b = 1.732050808 + -1 b = 1.732050808 + -1 Combine like terms: 1.732050808 + -1 = 0.732050808 b = 0.732050808 Simplifying b = 0.732050808

Subproblem 2

b + 1 = -1.732050808 Simplifying b + 1 = -1.732050808 Reorder the terms: 1 + b = -1.732050808 Solving 1 + b = -1.732050808 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + b = -1.732050808 + -1 Combine like terms: 1 + -1 = 0 0 + b = -1.732050808 + -1 b = -1.732050808 + -1 Combine like terms: -1.732050808 + -1 = -2.732050808 b = -2.732050808 Simplifying b = -2.732050808

Solution

The solution to the problem is based on the solutions from the subproblems. b = {0.732050808, -2.732050808}

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