x^2-3x-170=0

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Solution for x^2-3x-170=0 equation:


Simplifying
x2 + -3x + -170 = 0

Reorder the terms:
-170 + -3x + x2 = 0

Solving
-170 + -3x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '170' to each side of the equation.
-170 + -3x + 170 + x2 = 0 + 170

Reorder the terms:
-170 + 170 + -3x + x2 = 0 + 170

Combine like terms: -170 + 170 = 0
0 + -3x + x2 = 0 + 170
-3x + x2 = 0 + 170

Combine like terms: 0 + 170 = 170
-3x + x2 = 170

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 = 170 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 170 + 2.25

Combine like terms: 170 + 2.25 = 172.25
2.25 + -3x + x2 = 172.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 172.25

Calculate the square root of the right side: 13.124404748

Break this problem into two subproblems by setting 
(x + -1.5) equal to 13.124404748 and -13.124404748.

Subproblem 1

x + -1.5 = 13.124404748 Simplifying x + -1.5 = 13.124404748 Reorder the terms: -1.5 + x = 13.124404748 Solving -1.5 + x = 13.124404748 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 = 13.124404748 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 13.124404748 + 1.5 x = 13.124404748 + 1.5 Combine like terms: 13.124404748 + 1.5 = 14.624404748 x = 14.624404748 Simplifying x = 14.624404748

Subproblem 2

x + -1.5 = -13.124404748 Simplifying x + -1.5 = -13.124404748 Reorder the terms: -1.5 + x = -13.124404748 Solving -1.5 + x = -13.124404748 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 = -13.124404748 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -13.124404748 + 1.5 x = -13.124404748 + 1.5 Combine like terms: -13.124404748 + 1.5 = -11.624404748 x = -11.624404748 Simplifying x = -11.624404748

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.624404748, -11.624404748}

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