x^2+3x-167=0

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Solution for x^2+3x-167=0 equation:


Simplifying
x2 + 3x + -167 = 0

Reorder the terms:
-167 + 3x + x2 = 0

Solving
-167 + 3x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '167' to each side of the equation.
-167 + 3x + 167 + x2 = 0 + 167

Reorder the terms:
-167 + 167 + 3x + x2 = 0 + 167

Combine like terms: -167 + 167 = 0
0 + 3x + x2 = 0 + 167
3x + x2 = 0 + 167

Combine like terms: 0 + 167 = 167
3x + x2 = 167

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 = 167 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 167 + 2.25

Combine like terms: 167 + 2.25 = 169.25
2.25 + 3x + x2 = 169.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 169.25

Calculate the square root of the right side: 13.009611831

Break this problem into two subproblems by setting 
(x + 1.5) equal to 13.009611831 and -13.009611831.

Subproblem 1

x + 1.5 = 13.009611831 Simplifying x + 1.5 = 13.009611831 Reorder the terms: 1.5 + x = 13.009611831 Solving 1.5 + x = 13.009611831 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 = 13.009611831 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 13.009611831 + -1.5 x = 13.009611831 + -1.5 Combine like terms: 13.009611831 + -1.5 = 11.509611831 x = 11.509611831 Simplifying x = 11.509611831

Subproblem 2

x + 1.5 = -13.009611831 Simplifying x + 1.5 = -13.009611831 Reorder the terms: 1.5 + x = -13.009611831 Solving 1.5 + x = -13.009611831 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 = -13.009611831 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -13.009611831 + -1.5 x = -13.009611831 + -1.5 Combine like terms: -13.009611831 + -1.5 = -14.509611831 x = -14.509611831 Simplifying x = -14.509611831

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.509611831, -14.509611831}

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