6x^2+19x=-7

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Solution for 6x^2+19x=-7 equation:


Simplifying
6x2 + 19x = -7

Reorder the terms:
19x + 6x2 = -7

Solving
19x + 6x2 = -7

Solving for variable 'x'.

Reorder the terms:
7 + 19x + 6x2 = -7 + 7

Combine like terms: -7 + 7 = 0
7 + 19x + 6x2 = 0

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

Divide each side by '6'.
1.166666667 + 3.166666667x + x2 = 0

Move the constant term to the right:

Add '-1.166666667' to each side of the equation.
1.166666667 + 3.166666667x + -1.166666667 + x2 = 0 + -1.166666667

Reorder the terms:
1.166666667 + -1.166666667 + 3.166666667x + x2 = 0 + -1.166666667

Combine like terms: 1.166666667 + -1.166666667 = 0.000000000
0.000000000 + 3.166666667x + x2 = 0 + -1.166666667
3.166666667x + x2 = 0 + -1.166666667

Combine like terms: 0 + -1.166666667 = -1.166666667
3.166666667x + x2 = -1.166666667

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 = -1.166666667 + 2.506944447

Reorder the terms:
2.506944447 + 3.166666667x + x2 = -1.166666667 + 2.506944447

Combine like terms: -1.166666667 + 2.506944447 = 1.34027778
2.506944447 + 3.166666667x + x2 = 1.34027778

Factor a perfect square on the left side:
(x + 1.583333334)(x + 1.583333334) = 1.34027778

Calculate the square root of the right side: 1.157703667

Break this problem into two subproblems by setting 
(x + 1.583333334) equal to 1.157703667 and -1.157703667.

Subproblem 1

x + 1.583333334 = 1.157703667 Simplifying x + 1.583333334 = 1.157703667 Reorder the terms: 1.583333334 + x = 1.157703667 Solving 1.583333334 + x = 1.157703667 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 = 1.157703667 + -1.583333334 Combine like terms: 1.583333334 + -1.583333334 = 0.000000000 0.000000000 + x = 1.157703667 + -1.583333334 x = 1.157703667 + -1.583333334 Combine like terms: 1.157703667 + -1.583333334 = -0.425629667 x = -0.425629667 Simplifying x = -0.425629667

Subproblem 2

x + 1.583333334 = -1.157703667 Simplifying x + 1.583333334 = -1.157703667 Reorder the terms: 1.583333334 + x = -1.157703667 Solving 1.583333334 + x = -1.157703667 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 = -1.157703667 + -1.583333334 Combine like terms: 1.583333334 + -1.583333334 = 0.000000000 0.000000000 + x = -1.157703667 + -1.583333334 x = -1.157703667 + -1.583333334 Combine like terms: -1.157703667 + -1.583333334 = -2.741037001 x = -2.741037001 Simplifying x = -2.741037001

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.425629667, -2.741037001}

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