18x^2+48x-17=0

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Solution for 18x^2+48x-17=0 equation:


Simplifying
18x2 + 48x + -17 = 0

Reorder the terms:
-17 + 48x + 18x2 = 0

Solving
-17 + 48x + 18x2 = 0

Solving for variable 'x'.

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

Divide each side by '18'.
-0.9444444444 + 2.666666667x + x2 = 0

Move the constant term to the right:

Add '0.9444444444' to each side of the equation.
-0.9444444444 + 2.666666667x + 0.9444444444 + x2 = 0 + 0.9444444444

Reorder the terms:
-0.9444444444 + 0.9444444444 + 2.666666667x + x2 = 0 + 0.9444444444

Combine like terms: -0.9444444444 + 0.9444444444 = 0.0000000000
0.0000000000 + 2.666666667x + x2 = 0 + 0.9444444444
2.666666667x + x2 = 0 + 0.9444444444

Combine like terms: 0 + 0.9444444444 = 0.9444444444
2.666666667x + x2 = 0.9444444444

The x term is 2.666666667x.  Take half its coefficient (1.333333334).
Square it (1.777777780) and add it to both sides.

Add '1.777777780' to each side of the equation.
2.666666667x + 1.777777780 + x2 = 0.9444444444 + 1.777777780

Reorder the terms:
1.777777780 + 2.666666667x + x2 = 0.9444444444 + 1.777777780

Combine like terms: 0.9444444444 + 1.777777780 = 2.7222222244
1.777777780 + 2.666666667x + x2 = 2.7222222244

Factor a perfect square on the left side:
(x + 1.333333334)(x + 1.333333334) = 2.7222222244

Calculate the square root of the right side: 1.649915823

Break this problem into two subproblems by setting 
(x + 1.333333334) equal to 1.649915823 and -1.649915823.

Subproblem 1

x + 1.333333334 = 1.649915823 Simplifying x + 1.333333334 = 1.649915823 Reorder the terms: 1.333333334 + x = 1.649915823 Solving 1.333333334 + x = 1.649915823 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.333333334' to each side of the equation. 1.333333334 + -1.333333334 + x = 1.649915823 + -1.333333334 Combine like terms: 1.333333334 + -1.333333334 = 0.000000000 0.000000000 + x = 1.649915823 + -1.333333334 x = 1.649915823 + -1.333333334 Combine like terms: 1.649915823 + -1.333333334 = 0.316582489 x = 0.316582489 Simplifying x = 0.316582489

Subproblem 2

x + 1.333333334 = -1.649915823 Simplifying x + 1.333333334 = -1.649915823 Reorder the terms: 1.333333334 + x = -1.649915823 Solving 1.333333334 + x = -1.649915823 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.333333334' to each side of the equation. 1.333333334 + -1.333333334 + x = -1.649915823 + -1.333333334 Combine like terms: 1.333333334 + -1.333333334 = 0.000000000 0.000000000 + x = -1.649915823 + -1.333333334 x = -1.649915823 + -1.333333334 Combine like terms: -1.649915823 + -1.333333334 = -2.983249157 x = -2.983249157 Simplifying x = -2.983249157

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.316582489, -2.983249157}

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