b^2+3b-96.89=8.45

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Solution for b^2+3b-96.89=8.45 equation:


Simplifying
b2 + 3b + -96.89 = 8.45

Reorder the terms:
-96.89 + 3b + b2 = 8.45

Solving
-96.89 + 3b + b2 = 8.45

Solving for variable 'b'.

Reorder the terms:
-96.89 + -8.45 + 3b + b2 = 8.45 + -8.45

Combine like terms: -96.89 + -8.45 = -105.34
-105.34 + 3b + b2 = 8.45 + -8.45

Combine like terms: 8.45 + -8.45 = 0.00
-105.34 + 3b + b2 = 0.00

Begin completing the square.

Move the constant term to the right:

Add '105.34' to each side of the equation.
-105.34 + 3b + 105.34 + b2 = 0.00 + 105.34

Reorder the terms:
-105.34 + 105.34 + 3b + b2 = 0.00 + 105.34

Combine like terms: -105.34 + 105.34 = 0.00
0.00 + 3b + b2 = 0.00 + 105.34
3b + b2 = 0.00 + 105.34

Combine like terms: 0.00 + 105.34 = 105.34
3b + b2 = 105.34

The b term is 3b.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3b + 2.25 + b2 = 105.34 + 2.25

Reorder the terms:
2.25 + 3b + b2 = 105.34 + 2.25

Combine like terms: 105.34 + 2.25 = 107.59
2.25 + 3b + b2 = 107.59

Factor a perfect square on the left side:
(b + 1.5)(b + 1.5) = 107.59

Calculate the square root of the right side: 10.372559954

Break this problem into two subproblems by setting 
(b + 1.5) equal to 10.372559954 and -10.372559954.

Subproblem 1

b + 1.5 = 10.372559954 Simplifying b + 1.5 = 10.372559954 Reorder the terms: 1.5 + b = 10.372559954 Solving 1.5 + b = 10.372559954 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + b = 10.372559954 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + b = 10.372559954 + -1.5 b = 10.372559954 + -1.5 Combine like terms: 10.372559954 + -1.5 = 8.872559954 b = 8.872559954 Simplifying b = 8.872559954

Subproblem 2

b + 1.5 = -10.372559954 Simplifying b + 1.5 = -10.372559954 Reorder the terms: 1.5 + b = -10.372559954 Solving 1.5 + b = -10.372559954 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + b = -10.372559954 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + b = -10.372559954 + -1.5 b = -10.372559954 + -1.5 Combine like terms: -10.372559954 + -1.5 = -11.872559954 b = -11.872559954 Simplifying b = -11.872559954

Solution

The solution to the problem is based on the solutions from the subproblems. b = {8.872559954, -11.872559954}

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