19x^2-1984x+5120=0

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Solution for 19x^2-1984x+5120=0 equation:


Simplifying
19x2 + -1984x + 5120 = 0

Reorder the terms:
5120 + -1984x + 19x2 = 0

Solving
5120 + -1984x + 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'.
269.4736842 + -104.4210526x + x2 = 0

Move the constant term to the right:

Add '-269.4736842' to each side of the equation.
269.4736842 + -104.4210526x + -269.4736842 + x2 = 0 + -269.4736842

Reorder the terms:
269.4736842 + -269.4736842 + -104.4210526x + x2 = 0 + -269.4736842

Combine like terms: 269.4736842 + -269.4736842 = 0.0000000
0.0000000 + -104.4210526x + x2 = 0 + -269.4736842
-104.4210526x + x2 = 0 + -269.4736842

Combine like terms: 0 + -269.4736842 = -269.4736842
-104.4210526x + x2 = -269.4736842

The x term is -104.4210526x.  Take half its coefficient (-52.2105263).
Square it (2725.939057) and add it to both sides.

Add '2725.939057' to each side of the equation.
-104.4210526x + 2725.939057 + x2 = -269.4736842 + 2725.939057

Reorder the terms:
2725.939057 + -104.4210526x + x2 = -269.4736842 + 2725.939057

Combine like terms: -269.4736842 + 2725.939057 = 2456.4653728
2725.939057 + -104.4210526x + x2 = 2456.4653728

Factor a perfect square on the left side:
(x + -52.2105263)(x + -52.2105263) = 2456.4653728

Calculate the square root of the right side: 49.56274178

Break this problem into two subproblems by setting 
(x + -52.2105263) equal to 49.56274178 and -49.56274178.

Subproblem 1

x + -52.2105263 = 49.56274178 Simplifying x + -52.2105263 = 49.56274178 Reorder the terms: -52.2105263 + x = 49.56274178 Solving -52.2105263 + x = 49.56274178 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '52.2105263' to each side of the equation. -52.2105263 + 52.2105263 + x = 49.56274178 + 52.2105263 Combine like terms: -52.2105263 + 52.2105263 = 0.0000000 0.0000000 + x = 49.56274178 + 52.2105263 x = 49.56274178 + 52.2105263 Combine like terms: 49.56274178 + 52.2105263 = 101.77326808 x = 101.77326808 Simplifying x = 101.77326808

Subproblem 2

x + -52.2105263 = -49.56274178 Simplifying x + -52.2105263 = -49.56274178 Reorder the terms: -52.2105263 + x = -49.56274178 Solving -52.2105263 + x = -49.56274178 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '52.2105263' to each side of the equation. -52.2105263 + 52.2105263 + x = -49.56274178 + 52.2105263 Combine like terms: -52.2105263 + 52.2105263 = 0.0000000 0.0000000 + x = -49.56274178 + 52.2105263 x = -49.56274178 + 52.2105263 Combine like terms: -49.56274178 + 52.2105263 = 2.64778452 x = 2.64778452 Simplifying x = 2.64778452

Solution

The solution to the problem is based on the solutions from the subproblems. x = {101.77326808, 2.64778452}

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