(39x*x)-7x-34=0

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Solution for (39x*x)-7x-34=0 equation:


Simplifying
(39x * x) + -7x + -34 = 0

Multiply x * x
(39x2) + -7x + -34 = 0

Reorder the terms:
-34 + -7x + (39x2) = 0

Solving
-34 + -7x + (39x2) = 0

Solving for variable 'x'.

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

Divide each side by '39'.
-0.8717948718 + -0.1794871795x + x2 = 0

Move the constant term to the right:

Add '0.8717948718' to each side of the equation.
-0.8717948718 + -0.1794871795x + 0.8717948718 + x2 = 0 + 0.8717948718

Reorder the terms:
-0.8717948718 + 0.8717948718 + -0.1794871795x + x2 = 0 + 0.8717948718

Combine like terms: -0.8717948718 + 0.8717948718 = 0.0000000000
0.0000000000 + -0.1794871795x + x2 = 0 + 0.8717948718
-0.1794871795x + x2 = 0 + 0.8717948718

Combine like terms: 0 + 0.8717948718 = 0.8717948718
-0.1794871795x + x2 = 0.8717948718

The x term is -0.1794871795x.  Take half its coefficient (-0.08974358975).
Square it (0.008053911901) and add it to both sides.

Add '0.008053911901' to each side of the equation.
-0.1794871795x + 0.008053911901 + x2 = 0.8717948718 + 0.008053911901

Reorder the terms:
0.008053911901 + -0.1794871795x + x2 = 0.8717948718 + 0.008053911901

Combine like terms: 0.8717948718 + 0.008053911901 = 0.879848783701
0.008053911901 + -0.1794871795x + x2 = 0.879848783701

Factor a perfect square on the left side:
((x) + -0.08974358975)((x) + -0.08974358975) = 0.879848783701

Calculate the square root of the right side: 0.93800255

Break this problem into two subproblems by setting 
((x) + -0.08974358975) equal to 0.93800255 and -0.93800255.

Subproblem 1

(x) + -0.08974358975 = 0.93800255 Simplifying (x) + -0.08974358975 = 0.93800255 x + -0.08974358975 = 0.93800255 Reorder the terms: -0.08974358975 + x = 0.93800255 Solving -0.08974358975 + x = 0.93800255 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.08974358975' to each side of the equation. -0.08974358975 + 0.08974358975 + x = 0.93800255 + 0.08974358975 Combine like terms: -0.08974358975 + 0.08974358975 = 0.00000000000 0.00000000000 + x = 0.93800255 + 0.08974358975 x = 0.93800255 + 0.08974358975 Combine like terms: 0.93800255 + 0.08974358975 = 1.02774613975 x = 1.02774613975 Simplifying x = 1.02774613975

Subproblem 2

(x) + -0.08974358975 = -0.93800255 Simplifying (x) + -0.08974358975 = -0.93800255 x + -0.08974358975 = -0.93800255 Reorder the terms: -0.08974358975 + x = -0.93800255 Solving -0.08974358975 + x = -0.93800255 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.08974358975' to each side of the equation. -0.08974358975 + 0.08974358975 + x = -0.93800255 + 0.08974358975 Combine like terms: -0.08974358975 + 0.08974358975 = 0.00000000000 0.00000000000 + x = -0.93800255 + 0.08974358975 x = -0.93800255 + 0.08974358975 Combine like terms: -0.93800255 + 0.08974358975 = -0.84825896025 x = -0.84825896025 Simplifying x = -0.84825896025

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.02774613975, -0.84825896025}

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