(2-B)*B=0.13

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Solution for (2-B)*B=0.13 equation:


Simplifying
(2 + -1B) * B = 0.13

Reorder the terms for easier multiplication:
B(2 + -1B) = 0.13
(2 * B + -1B * B) = 0.13
(2B + -1B2) = 0.13

Solving
2B + -1B2 = 0.13

Solving for variable 'B'.

Reorder the terms:
-0.13 + 2B + -1B2 = 0.13 + -0.13

Combine like terms: 0.13 + -0.13 = 0.00
-0.13 + 2B + -1B2 = 0.00

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

Divide each side by '-1'.
0.13 + -2B + B2 = 0.00

Move the constant term to the right:

Add '-0.13' to each side of the equation.
0.13 + -2B + -0.13 + B2 = 0.00 + -0.13

Reorder the terms:
0.13 + -0.13 + -2B + B2 = 0.00 + -0.13

Combine like terms: 0.13 + -0.13 = 0.00
0.00 + -2B + B2 = 0.00 + -0.13
-2B + B2 = 0.00 + -0.13

Combine like terms: 0.00 + -0.13 = -0.13
-2B + B2 = -0.13

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 = -0.13 + 1

Reorder the terms:
1 + -2B + B2 = -0.13 + 1

Combine like terms: -0.13 + 1 = 0.87
1 + -2B + B2 = 0.87

Factor a perfect square on the left side:
(B + -1)(B + -1) = 0.87

Calculate the square root of the right side: 0.932737905

Break this problem into two subproblems by setting 
(B + -1) equal to 0.932737905 and -0.932737905.

Subproblem 1

B + -1 = 0.932737905 Simplifying B + -1 = 0.932737905 Reorder the terms: -1 + B = 0.932737905 Solving -1 + B = 0.932737905 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 = 0.932737905 + 1 Combine like terms: -1 + 1 = 0 0 + B = 0.932737905 + 1 B = 0.932737905 + 1 Combine like terms: 0.932737905 + 1 = 1.932737905 B = 1.932737905 Simplifying B = 1.932737905

Subproblem 2

B + -1 = -0.932737905 Simplifying B + -1 = -0.932737905 Reorder the terms: -1 + B = -0.932737905 Solving -1 + B = -0.932737905 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 = -0.932737905 + 1 Combine like terms: -1 + 1 = 0 0 + B = -0.932737905 + 1 B = -0.932737905 + 1 Combine like terms: -0.932737905 + 1 = 0.067262095 B = 0.067262095 Simplifying B = 0.067262095

Solution

The solution to the problem is based on the solutions from the subproblems. B = {1.932737905, 0.067262095}

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