100b^2-258b+144=5b^2

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Solution for 100b^2-258b+144=5b^2 equation:


Simplifying
100b2 + -258b + 144 = 5b2

Reorder the terms:
144 + -258b + 100b2 = 5b2

Solving
144 + -258b + 100b2 = 5b2

Solving for variable 'b'.

Combine like terms: 100b2 + -5b2 = 95b2
144 + -258b + 95b2 = 5b2 + -5b2

Combine like terms: 5b2 + -5b2 = 0
144 + -258b + 95b2 = 0

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

Divide each side by '95'.
1.515789474 + -2.715789474b + b2 = 0

Move the constant term to the right:

Add '-1.515789474' to each side of the equation.
1.515789474 + -2.715789474b + -1.515789474 + b2 = 0 + -1.515789474

Reorder the terms:
1.515789474 + -1.515789474 + -2.715789474b + b2 = 0 + -1.515789474

Combine like terms: 1.515789474 + -1.515789474 = 0.000000000
0.000000000 + -2.715789474b + b2 = 0 + -1.515789474
-2.715789474b + b2 = 0 + -1.515789474

Combine like terms: 0 + -1.515789474 = -1.515789474
-2.715789474b + b2 = -1.515789474

The b term is -2.715789474b.  Take half its coefficient (-1.357894737).
Square it (1.843878117) and add it to both sides.

Add '1.843878117' to each side of the equation.
-2.715789474b + 1.843878117 + b2 = -1.515789474 + 1.843878117

Reorder the terms:
1.843878117 + -2.715789474b + b2 = -1.515789474 + 1.843878117

Combine like terms: -1.515789474 + 1.843878117 = 0.328088643
1.843878117 + -2.715789474b + b2 = 0.328088643

Factor a perfect square on the left side:
(b + -1.357894737)(b + -1.357894737) = 0.328088643

Calculate the square root of the right side: 0.572790226

Break this problem into two subproblems by setting 
(b + -1.357894737) equal to 0.572790226 and -0.572790226.

Subproblem 1

b + -1.357894737 = 0.572790226 Simplifying b + -1.357894737 = 0.572790226 Reorder the terms: -1.357894737 + b = 0.572790226 Solving -1.357894737 + b = 0.572790226 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '1.357894737' to each side of the equation. -1.357894737 + 1.357894737 + b = 0.572790226 + 1.357894737 Combine like terms: -1.357894737 + 1.357894737 = 0.000000000 0.000000000 + b = 0.572790226 + 1.357894737 b = 0.572790226 + 1.357894737 Combine like terms: 0.572790226 + 1.357894737 = 1.930684963 b = 1.930684963 Simplifying b = 1.930684963

Subproblem 2

b + -1.357894737 = -0.572790226 Simplifying b + -1.357894737 = -0.572790226 Reorder the terms: -1.357894737 + b = -0.572790226 Solving -1.357894737 + b = -0.572790226 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '1.357894737' to each side of the equation. -1.357894737 + 1.357894737 + b = -0.572790226 + 1.357894737 Combine like terms: -1.357894737 + 1.357894737 = 0.000000000 0.000000000 + b = -0.572790226 + 1.357894737 b = -0.572790226 + 1.357894737 Combine like terms: -0.572790226 + 1.357894737 = 0.785104511 b = 0.785104511 Simplifying b = 0.785104511

Solution

The solution to the problem is based on the solutions from the subproblems. b = {1.930684963, 0.785104511}

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