b^2+4b-48=0

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Solution for b^2+4b-48=0 equation:


Simplifying
b2 + 4b + -48 = 0

Reorder the terms:
-48 + 4b + b2 = 0

Solving
-48 + 4b + b2 = 0

Solving for variable 'b'.

Begin completing the square.

Move the constant term to the right:

Add '48' to each side of the equation.
-48 + 4b + 48 + b2 = 0 + 48

Reorder the terms:
-48 + 48 + 4b + b2 = 0 + 48

Combine like terms: -48 + 48 = 0
0 + 4b + b2 = 0 + 48
4b + b2 = 0 + 48

Combine like terms: 0 + 48 = 48
4b + b2 = 48

The b term is 4b.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4b + 4 + b2 = 48 + 4

Reorder the terms:
4 + 4b + b2 = 48 + 4

Combine like terms: 48 + 4 = 52
4 + 4b + b2 = 52

Factor a perfect square on the left side:
(b + 2)(b + 2) = 52

Calculate the square root of the right side: 7.211102551

Break this problem into two subproblems by setting 
(b + 2) equal to 7.211102551 and -7.211102551.

Subproblem 1

b + 2 = 7.211102551 Simplifying b + 2 = 7.211102551 Reorder the terms: 2 + b = 7.211102551 Solving 2 + b = 7.211102551 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + b = 7.211102551 + -2 Combine like terms: 2 + -2 = 0 0 + b = 7.211102551 + -2 b = 7.211102551 + -2 Combine like terms: 7.211102551 + -2 = 5.211102551 b = 5.211102551 Simplifying b = 5.211102551

Subproblem 2

b + 2 = -7.211102551 Simplifying b + 2 = -7.211102551 Reorder the terms: 2 + b = -7.211102551 Solving 2 + b = -7.211102551 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + b = -7.211102551 + -2 Combine like terms: 2 + -2 = 0 0 + b = -7.211102551 + -2 b = -7.211102551 + -2 Combine like terms: -7.211102551 + -2 = -9.211102551 b = -9.211102551 Simplifying b = -9.211102551

Solution

The solution to the problem is based on the solutions from the subproblems. b = {5.211102551, -9.211102551}

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