19x+6x^2=98

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Solution for 19x+6x^2=98 equation:


Simplifying
19x + 6x2 = 98

Solving
19x + 6x2 = 98

Solving for variable 'x'.

Reorder the terms:
-98 + 19x + 6x2 = 98 + -98

Combine like terms: 98 + -98 = 0
-98 + 19x + 6x2 = 0

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

Divide each side by '6'.
-16.33333333 + 3.166666667x + x2 = 0

Move the constant term to the right:

Add '16.33333333' to each side of the equation.
-16.33333333 + 3.166666667x + 16.33333333 + x2 = 0 + 16.33333333

Reorder the terms:
-16.33333333 + 16.33333333 + 3.166666667x + x2 = 0 + 16.33333333

Combine like terms: -16.33333333 + 16.33333333 = 0.00000000
0.00000000 + 3.166666667x + x2 = 0 + 16.33333333
3.166666667x + x2 = 0 + 16.33333333

Combine like terms: 0 + 16.33333333 = 16.33333333
3.166666667x + x2 = 16.33333333

The x term is 3.166666667x.  Take half its coefficient (1.583333334).
Square it (2.506944447) and add it to both sides.

Add '2.506944447' to each side of the equation.
3.166666667x + 2.506944447 + x2 = 16.33333333 + 2.506944447

Reorder the terms:
2.506944447 + 3.166666667x + x2 = 16.33333333 + 2.506944447

Combine like terms: 16.33333333 + 2.506944447 = 18.840277777
2.506944447 + 3.166666667x + x2 = 18.840277777

Factor a perfect square on the left side:
(x + 1.583333334)(x + 1.583333334) = 18.840277777

Calculate the square root of the right side: 4.340538881

Break this problem into two subproblems by setting 
(x + 1.583333334) equal to 4.340538881 and -4.340538881.

Subproblem 1

x + 1.583333334 = 4.340538881 Simplifying x + 1.583333334 = 4.340538881 Reorder the terms: 1.583333334 + x = 4.340538881 Solving 1.583333334 + x = 4.340538881 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.583333334' to each side of the equation. 1.583333334 + -1.583333334 + x = 4.340538881 + -1.583333334 Combine like terms: 1.583333334 + -1.583333334 = 0.000000000 0.000000000 + x = 4.340538881 + -1.583333334 x = 4.340538881 + -1.583333334 Combine like terms: 4.340538881 + -1.583333334 = 2.757205547 x = 2.757205547 Simplifying x = 2.757205547

Subproblem 2

x + 1.583333334 = -4.340538881 Simplifying x + 1.583333334 = -4.340538881 Reorder the terms: 1.583333334 + x = -4.340538881 Solving 1.583333334 + x = -4.340538881 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.583333334' to each side of the equation. 1.583333334 + -1.583333334 + x = -4.340538881 + -1.583333334 Combine like terms: 1.583333334 + -1.583333334 = 0.000000000 0.000000000 + x = -4.340538881 + -1.583333334 x = -4.340538881 + -1.583333334 Combine like terms: -4.340538881 + -1.583333334 = -5.923872215 x = -5.923872215 Simplifying x = -5.923872215

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.757205547, -5.923872215}

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