x^2+9.13x-148=0

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Solution for x^2+9.13x-148=0 equation:


Simplifying
x2 + 9.13x + -148 = 0

Reorder the terms:
-148 + 9.13x + x2 = 0

Solving
-148 + 9.13x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '148' to each side of the equation.
-148 + 9.13x + 148 + x2 = 0 + 148

Reorder the terms:
-148 + 148 + 9.13x + x2 = 0 + 148

Combine like terms: -148 + 148 = 0
0 + 9.13x + x2 = 0 + 148
9.13x + x2 = 0 + 148

Combine like terms: 0 + 148 = 148
9.13x + x2 = 148

The x term is 9.13x.  Take half its coefficient (4.565).
Square it (20.839225) and add it to both sides.

Add '20.839225' to each side of the equation.
9.13x + 20.839225 + x2 = 148 + 20.839225

Reorder the terms:
20.839225 + 9.13x + x2 = 148 + 20.839225

Combine like terms: 148 + 20.839225 = 168.839225
20.839225 + 9.13x + x2 = 168.839225

Factor a perfect square on the left side:
(x + 4.565)(x + 4.565) = 168.839225

Calculate the square root of the right side: 12.993814875

Break this problem into two subproblems by setting 
(x + 4.565) equal to 12.993814875 and -12.993814875.

Subproblem 1

x + 4.565 = 12.993814875 Simplifying x + 4.565 = 12.993814875 Reorder the terms: 4.565 + x = 12.993814875 Solving 4.565 + x = 12.993814875 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.565' to each side of the equation. 4.565 + -4.565 + x = 12.993814875 + -4.565 Combine like terms: 4.565 + -4.565 = 0.000 0.000 + x = 12.993814875 + -4.565 x = 12.993814875 + -4.565 Combine like terms: 12.993814875 + -4.565 = 8.428814875 x = 8.428814875 Simplifying x = 8.428814875

Subproblem 2

x + 4.565 = -12.993814875 Simplifying x + 4.565 = -12.993814875 Reorder the terms: 4.565 + x = -12.993814875 Solving 4.565 + x = -12.993814875 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.565' to each side of the equation. 4.565 + -4.565 + x = -12.993814875 + -4.565 Combine like terms: 4.565 + -4.565 = 0.000 0.000 + x = -12.993814875 + -4.565 x = -12.993814875 + -4.565 Combine like terms: -12.993814875 + -4.565 = -17.558814875 x = -17.558814875 Simplifying x = -17.558814875

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.428814875, -17.558814875}

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