19x^2+9x-14=0

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Solution for 19x^2+9x-14=0 equation:


Simplifying
19x2 + 9x + -14 = 0

Reorder the terms:
-14 + 9x + 19x2 = 0

Solving
-14 + 9x + 19x2 = 0

Solving for variable 'x'.

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

Divide each side by '19'.
-0.7368421053 + 0.4736842105x + x2 = 0

Move the constant term to the right:

Add '0.7368421053' to each side of the equation.
-0.7368421053 + 0.4736842105x + 0.7368421053 + x2 = 0 + 0.7368421053

Reorder the terms:
-0.7368421053 + 0.7368421053 + 0.4736842105x + x2 = 0 + 0.7368421053

Combine like terms: -0.7368421053 + 0.7368421053 = 0.0000000000
0.0000000000 + 0.4736842105x + x2 = 0 + 0.7368421053
0.4736842105x + x2 = 0 + 0.7368421053

Combine like terms: 0 + 0.7368421053 = 0.7368421053
0.4736842105x + x2 = 0.7368421053

The x term is 0.4736842105x.  Take half its coefficient (0.2368421053).
Square it (0.05609418284) and add it to both sides.

Add '0.05609418284' to each side of the equation.
0.4736842105x + 0.05609418284 + x2 = 0.7368421053 + 0.05609418284

Reorder the terms:
0.05609418284 + 0.4736842105x + x2 = 0.7368421053 + 0.05609418284

Combine like terms: 0.7368421053 + 0.05609418284 = 0.79293628814
0.05609418284 + 0.4736842105x + x2 = 0.79293628814

Factor a perfect square on the left side:
(x + 0.2368421053)(x + 0.2368421053) = 0.79293628814

Calculate the square root of the right side: 0.890469701

Break this problem into two subproblems by setting 
(x + 0.2368421053) equal to 0.890469701 and -0.890469701.

Subproblem 1

x + 0.2368421053 = 0.890469701 Simplifying x + 0.2368421053 = 0.890469701 Reorder the terms: 0.2368421053 + x = 0.890469701 Solving 0.2368421053 + x = 0.890469701 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2368421053' to each side of the equation. 0.2368421053 + -0.2368421053 + x = 0.890469701 + -0.2368421053 Combine like terms: 0.2368421053 + -0.2368421053 = 0.0000000000 0.0000000000 + x = 0.890469701 + -0.2368421053 x = 0.890469701 + -0.2368421053 Combine like terms: 0.890469701 + -0.2368421053 = 0.6536275957 x = 0.6536275957 Simplifying x = 0.6536275957

Subproblem 2

x + 0.2368421053 = -0.890469701 Simplifying x + 0.2368421053 = -0.890469701 Reorder the terms: 0.2368421053 + x = -0.890469701 Solving 0.2368421053 + x = -0.890469701 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2368421053' to each side of the equation. 0.2368421053 + -0.2368421053 + x = -0.890469701 + -0.2368421053 Combine like terms: 0.2368421053 + -0.2368421053 = 0.0000000000 0.0000000000 + x = -0.890469701 + -0.2368421053 x = -0.890469701 + -0.2368421053 Combine like terms: -0.890469701 + -0.2368421053 = -1.1273118063 x = -1.1273118063 Simplifying x = -1.1273118063

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.6536275957, -1.1273118063}

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