19x^2+102x-118=0

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Solution for 19x^2+102x-118=0 equation:


Simplifying
19x2 + 102x + -118 = 0

Reorder the terms:
-118 + 102x + 19x2 = 0

Solving
-118 + 102x + 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'.
-6.210526316 + 5.368421053x + x2 = 0

Move the constant term to the right:

Add '6.210526316' to each side of the equation.
-6.210526316 + 5.368421053x + 6.210526316 + x2 = 0 + 6.210526316

Reorder the terms:
-6.210526316 + 6.210526316 + 5.368421053x + x2 = 0 + 6.210526316

Combine like terms: -6.210526316 + 6.210526316 = 0.000000000
0.000000000 + 5.368421053x + x2 = 0 + 6.210526316
5.368421053x + x2 = 0 + 6.210526316

Combine like terms: 0 + 6.210526316 = 6.210526316
5.368421053x + x2 = 6.210526316

The x term is 5.368421053x.  Take half its coefficient (2.684210527).
Square it (7.204986153) and add it to both sides.

Add '7.204986153' to each side of the equation.
5.368421053x + 7.204986153 + x2 = 6.210526316 + 7.204986153

Reorder the terms:
7.204986153 + 5.368421053x + x2 = 6.210526316 + 7.204986153

Combine like terms: 6.210526316 + 7.204986153 = 13.415512469
7.204986153 + 5.368421053x + x2 = 13.415512469

Factor a perfect square on the left side:
(x + 2.684210527)(x + 2.684210527) = 13.415512469

Calculate the square root of the right side: 3.662719272

Break this problem into two subproblems by setting 
(x + 2.684210527) equal to 3.662719272 and -3.662719272.

Subproblem 1

x + 2.684210527 = 3.662719272 Simplifying x + 2.684210527 = 3.662719272 Reorder the terms: 2.684210527 + x = 3.662719272 Solving 2.684210527 + x = 3.662719272 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.684210527' to each side of the equation. 2.684210527 + -2.684210527 + x = 3.662719272 + -2.684210527 Combine like terms: 2.684210527 + -2.684210527 = 0.000000000 0.000000000 + x = 3.662719272 + -2.684210527 x = 3.662719272 + -2.684210527 Combine like terms: 3.662719272 + -2.684210527 = 0.978508745 x = 0.978508745 Simplifying x = 0.978508745

Subproblem 2

x + 2.684210527 = -3.662719272 Simplifying x + 2.684210527 = -3.662719272 Reorder the terms: 2.684210527 + x = -3.662719272 Solving 2.684210527 + x = -3.662719272 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.684210527' to each side of the equation. 2.684210527 + -2.684210527 + x = -3.662719272 + -2.684210527 Combine like terms: 2.684210527 + -2.684210527 = 0.000000000 0.000000000 + x = -3.662719272 + -2.684210527 x = -3.662719272 + -2.684210527 Combine like terms: -3.662719272 + -2.684210527 = -6.346929799 x = -6.346929799 Simplifying x = -6.346929799

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.978508745, -6.346929799}

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