(x^2)+3x+13=182

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Solution for (x^2)+3x+13=182 equation:


Simplifying
(x2) + 3x + 13 = 182
x2 + 3x + 13 = 182

Reorder the terms:
13 + 3x + x2 = 182

Solving
13 + 3x + x2 = 182

Solving for variable 'x'.

Reorder the terms:
13 + -182 + 3x + x2 = 182 + -182

Combine like terms: 13 + -182 = -169
-169 + 3x + x2 = 182 + -182

Combine like terms: 182 + -182 = 0
-169 + 3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '169' to each side of the equation.
-169 + 3x + 169 + x2 = 0 + 169

Reorder the terms:
-169 + 169 + 3x + x2 = 0 + 169

Combine like terms: -169 + 169 = 0
0 + 3x + x2 = 0 + 169
3x + x2 = 0 + 169

Combine like terms: 0 + 169 = 169
3x + x2 = 169

The x term is 3x.  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.
3x + 2.25 + x2 = 169 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 169 + 2.25

Combine like terms: 169 + 2.25 = 171.25
2.25 + 3x + x2 = 171.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 171.25

Calculate the square root of the right side: 13.086252328

Break this problem into two subproblems by setting 
(x + 1.5) equal to 13.086252328 and -13.086252328.

Subproblem 1

x + 1.5 = 13.086252328 Simplifying x + 1.5 = 13.086252328 Reorder the terms: 1.5 + x = 13.086252328 Solving 1.5 + x = 13.086252328 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 13.086252328 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 13.086252328 + -1.5 x = 13.086252328 + -1.5 Combine like terms: 13.086252328 + -1.5 = 11.586252328 x = 11.586252328 Simplifying x = 11.586252328

Subproblem 2

x + 1.5 = -13.086252328 Simplifying x + 1.5 = -13.086252328 Reorder the terms: 1.5 + x = -13.086252328 Solving 1.5 + x = -13.086252328 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -13.086252328 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -13.086252328 + -1.5 x = -13.086252328 + -1.5 Combine like terms: -13.086252328 + -1.5 = -14.586252328 x = -14.586252328 Simplifying x = -14.586252328

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.586252328, -14.586252328}

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