19x^2-140x-180=0

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Solution for 19x^2-140x-180=0 equation:


Simplifying
19x2 + -140x + -180 = 0

Reorder the terms:
-180 + -140x + 19x2 = 0

Solving
-180 + -140x + 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'.
-9.473684211 + -7.368421053x + x2 = 0

Move the constant term to the right:

Add '9.473684211' to each side of the equation.
-9.473684211 + -7.368421053x + 9.473684211 + x2 = 0 + 9.473684211

Reorder the terms:
-9.473684211 + 9.473684211 + -7.368421053x + x2 = 0 + 9.473684211

Combine like terms: -9.473684211 + 9.473684211 = 0.000000000
0.000000000 + -7.368421053x + x2 = 0 + 9.473684211
-7.368421053x + x2 = 0 + 9.473684211

Combine like terms: 0 + 9.473684211 = 9.473684211
-7.368421053x + x2 = 9.473684211

The x term is -7.368421053x.  Take half its coefficient (-3.684210527).
Square it (13.57340721) and add it to both sides.

Add '13.57340721' to each side of the equation.
-7.368421053x + 13.57340721 + x2 = 9.473684211 + 13.57340721

Reorder the terms:
13.57340721 + -7.368421053x + x2 = 9.473684211 + 13.57340721

Combine like terms: 9.473684211 + 13.57340721 = 23.047091421
13.57340721 + -7.368421053x + x2 = 23.047091421

Factor a perfect square on the left side:
(x + -3.684210527)(x + -3.684210527) = 23.047091421

Calculate the square root of the right side: 4.800738633

Break this problem into two subproblems by setting 
(x + -3.684210527) equal to 4.800738633 and -4.800738633.

Subproblem 1

x + -3.684210527 = 4.800738633 Simplifying x + -3.684210527 = 4.800738633 Reorder the terms: -3.684210527 + x = 4.800738633 Solving -3.684210527 + x = 4.800738633 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.684210527' to each side of the equation. -3.684210527 + 3.684210527 + x = 4.800738633 + 3.684210527 Combine like terms: -3.684210527 + 3.684210527 = 0.000000000 0.000000000 + x = 4.800738633 + 3.684210527 x = 4.800738633 + 3.684210527 Combine like terms: 4.800738633 + 3.684210527 = 8.48494916 x = 8.48494916 Simplifying x = 8.48494916

Subproblem 2

x + -3.684210527 = -4.800738633 Simplifying x + -3.684210527 = -4.800738633 Reorder the terms: -3.684210527 + x = -4.800738633 Solving -3.684210527 + x = -4.800738633 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.684210527' to each side of the equation. -3.684210527 + 3.684210527 + x = -4.800738633 + 3.684210527 Combine like terms: -3.684210527 + 3.684210527 = 0.000000000 0.000000000 + x = -4.800738633 + 3.684210527 x = -4.800738633 + 3.684210527 Combine like terms: -4.800738633 + 3.684210527 = -1.116528106 x = -1.116528106 Simplifying x = -1.116528106

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.48494916, -1.116528106}

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