5x^2+172x-160=0

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Solution for 5x^2+172x-160=0 equation:


Simplifying
5x2 + 172x + -160 = 0

Reorder the terms:
-160 + 172x + 5x2 = 0

Solving
-160 + 172x + 5x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
5 the coefficient of the squared term: 

Divide each side by '5'.
-32 + 34.4x + x2 = 0

Move the constant term to the right:

Add '32' to each side of the equation.
-32 + 34.4x + 32 + x2 = 0 + 32

Reorder the terms:
-32 + 32 + 34.4x + x2 = 0 + 32

Combine like terms: -32 + 32 = 0
0 + 34.4x + x2 = 0 + 32
34.4x + x2 = 0 + 32

Combine like terms: 0 + 32 = 32
34.4x + x2 = 32

The x term is 34.4x.  Take half its coefficient (17.2).
Square it (295.84) and add it to both sides.

Add '295.84' to each side of the equation.
34.4x + 295.84 + x2 = 32 + 295.84

Reorder the terms:
295.84 + 34.4x + x2 = 32 + 295.84

Combine like terms: 32 + 295.84 = 327.84
295.84 + 34.4x + x2 = 327.84

Factor a perfect square on the left side:
(x + 17.2)(x + 17.2) = 327.84

Calculate the square root of the right side: 18.106352476

Break this problem into two subproblems by setting 
(x + 17.2) equal to 18.106352476 and -18.106352476.

Subproblem 1

x + 17.2 = 18.106352476 Simplifying x + 17.2 = 18.106352476 Reorder the terms: 17.2 + x = 18.106352476 Solving 17.2 + x = 18.106352476 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-17.2' to each side of the equation. 17.2 + -17.2 + x = 18.106352476 + -17.2 Combine like terms: 17.2 + -17.2 = 0.0 0.0 + x = 18.106352476 + -17.2 x = 18.106352476 + -17.2 Combine like terms: 18.106352476 + -17.2 = 0.906352476 x = 0.906352476 Simplifying x = 0.906352476

Subproblem 2

x + 17.2 = -18.106352476 Simplifying x + 17.2 = -18.106352476 Reorder the terms: 17.2 + x = -18.106352476 Solving 17.2 + x = -18.106352476 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-17.2' to each side of the equation. 17.2 + -17.2 + x = -18.106352476 + -17.2 Combine like terms: 17.2 + -17.2 = 0.0 0.0 + x = -18.106352476 + -17.2 x = -18.106352476 + -17.2 Combine like terms: -18.106352476 + -17.2 = -35.306352476 x = -35.306352476 Simplifying x = -35.306352476

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.906352476, -35.306352476}

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