7x^2-48x-34=0

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Solution for 7x^2-48x-34=0 equation:


Simplifying
7x2 + -48x + -34 = 0

Reorder the terms:
-34 + -48x + 7x2 = 0

Solving
-34 + -48x + 7x2 = 0

Solving for variable 'x'.

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

Divide each side by '7'.
-4.857142857 + -6.857142857x + x2 = 0

Move the constant term to the right:

Add '4.857142857' to each side of the equation.
-4.857142857 + -6.857142857x + 4.857142857 + x2 = 0 + 4.857142857

Reorder the terms:
-4.857142857 + 4.857142857 + -6.857142857x + x2 = 0 + 4.857142857

Combine like terms: -4.857142857 + 4.857142857 = 0.000000000
0.000000000 + -6.857142857x + x2 = 0 + 4.857142857
-6.857142857x + x2 = 0 + 4.857142857

Combine like terms: 0 + 4.857142857 = 4.857142857
-6.857142857x + x2 = 4.857142857

The x term is -6.857142857x.  Take half its coefficient (-3.428571429).
Square it (11.75510204) and add it to both sides.

Add '11.75510204' to each side of the equation.
-6.857142857x + 11.75510204 + x2 = 4.857142857 + 11.75510204

Reorder the terms:
11.75510204 + -6.857142857x + x2 = 4.857142857 + 11.75510204

Combine like terms: 4.857142857 + 11.75510204 = 16.612244897
11.75510204 + -6.857142857x + x2 = 16.612244897

Factor a perfect square on the left side:
(x + -3.428571429)(x + -3.428571429) = 16.612244897

Calculate the square root of the right side: 4.075812176

Break this problem into two subproblems by setting 
(x + -3.428571429) equal to 4.075812176 and -4.075812176.

Subproblem 1

x + -3.428571429 = 4.075812176 Simplifying x + -3.428571429 = 4.075812176 Reorder the terms: -3.428571429 + x = 4.075812176 Solving -3.428571429 + x = 4.075812176 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.428571429' to each side of the equation. -3.428571429 + 3.428571429 + x = 4.075812176 + 3.428571429 Combine like terms: -3.428571429 + 3.428571429 = 0.000000000 0.000000000 + x = 4.075812176 + 3.428571429 x = 4.075812176 + 3.428571429 Combine like terms: 4.075812176 + 3.428571429 = 7.504383605 x = 7.504383605 Simplifying x = 7.504383605

Subproblem 2

x + -3.428571429 = -4.075812176 Simplifying x + -3.428571429 = -4.075812176 Reorder the terms: -3.428571429 + x = -4.075812176 Solving -3.428571429 + x = -4.075812176 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.428571429' to each side of the equation. -3.428571429 + 3.428571429 + x = -4.075812176 + 3.428571429 Combine like terms: -3.428571429 + 3.428571429 = 0.000000000 0.000000000 + x = -4.075812176 + 3.428571429 x = -4.075812176 + 3.428571429 Combine like terms: -4.075812176 + 3.428571429 = -0.647240747 x = -0.647240747 Simplifying x = -0.647240747

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.504383605, -0.647240747}

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