1.9x^2-x-350=5x-9

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Solution for 1.9x^2-x-350=5x-9 equation:


Simplifying
1.9x2 + -1x + -350 = 5x + -9

Reorder the terms:
-350 + -1x + 1.9x2 = 5x + -9

Reorder the terms:
-350 + -1x + 1.9x2 = -9 + 5x

Solving
-350 + -1x + 1.9x2 = -9 + 5x

Solving for variable 'x'.

Reorder the terms:
-350 + 9 + -1x + -5x + 1.9x2 = -9 + 5x + 9 + -5x

Combine like terms: -350 + 9 = -341
-341 + -1x + -5x + 1.9x2 = -9 + 5x + 9 + -5x

Combine like terms: -1x + -5x = -6x
-341 + -6x + 1.9x2 = -9 + 5x + 9 + -5x

Reorder the terms:
-341 + -6x + 1.9x2 = -9 + 9 + 5x + -5x

Combine like terms: -9 + 9 = 0
-341 + -6x + 1.9x2 = 0 + 5x + -5x
-341 + -6x + 1.9x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
-341 + -6x + 1.9x2 = 0

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

Divide each side by '1.9'.
-179.4736842 + -3.157894737x + x2 = 0

Move the constant term to the right:

Add '179.4736842' to each side of the equation.
-179.4736842 + -3.157894737x + 179.4736842 + x2 = 0 + 179.4736842

Reorder the terms:
-179.4736842 + 179.4736842 + -3.157894737x + x2 = 0 + 179.4736842

Combine like terms: -179.4736842 + 179.4736842 = 0.0000000
0.0000000 + -3.157894737x + x2 = 0 + 179.4736842
-3.157894737x + x2 = 0 + 179.4736842

Combine like terms: 0 + 179.4736842 = 179.4736842
-3.157894737x + x2 = 179.4736842

The x term is -3.157894737x.  Take half its coefficient (-1.578947369).
Square it (2.493074794) and add it to both sides.

Add '2.493074794' to each side of the equation.
-3.157894737x + 2.493074794 + x2 = 179.4736842 + 2.493074794

Reorder the terms:
2.493074794 + -3.157894737x + x2 = 179.4736842 + 2.493074794

Combine like terms: 179.4736842 + 2.493074794 = 181.966758994
2.493074794 + -3.157894737x + x2 = 181.966758994

Factor a perfect square on the left side:
(x + -1.578947369)(x + -1.578947369) = 181.966758994

Calculate the square root of the right side: 13.489505513

Break this problem into two subproblems by setting 
(x + -1.578947369) equal to 13.489505513 and -13.489505513.

Subproblem 1

x + -1.578947369 = 13.489505513 Simplifying x + -1.578947369 = 13.489505513 Reorder the terms: -1.578947369 + x = 13.489505513 Solving -1.578947369 + x = 13.489505513 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.578947369' to each side of the equation. -1.578947369 + 1.578947369 + x = 13.489505513 + 1.578947369 Combine like terms: -1.578947369 + 1.578947369 = 0.000000000 0.000000000 + x = 13.489505513 + 1.578947369 x = 13.489505513 + 1.578947369 Combine like terms: 13.489505513 + 1.578947369 = 15.068452882 x = 15.068452882 Simplifying x = 15.068452882

Subproblem 2

x + -1.578947369 = -13.489505513 Simplifying x + -1.578947369 = -13.489505513 Reorder the terms: -1.578947369 + x = -13.489505513 Solving -1.578947369 + x = -13.489505513 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.578947369' to each side of the equation. -1.578947369 + 1.578947369 + x = -13.489505513 + 1.578947369 Combine like terms: -1.578947369 + 1.578947369 = 0.000000000 0.000000000 + x = -13.489505513 + 1.578947369 x = -13.489505513 + 1.578947369 Combine like terms: -13.489505513 + 1.578947369 = -11.910558144 x = -11.910558144 Simplifying x = -11.910558144

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.068452882, -11.910558144}

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