7x^2-48x+7=0

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


Simplifying
7x2 + -48x + 7 = 0

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

Solving
7 + -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'.
1 + -6.857142857x + x2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -6.857142857x + -1 + x2 = 0 + -1

Reorder the terms:
1 + -1 + -6.857142857x + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -6.857142857x + x2 = 0 + -1
-6.857142857x + x2 = 0 + -1

Combine like terms: 0 + -1 = -1
-6.857142857x + x2 = -1

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 = -1 + 11.75510204

Reorder the terms:
11.75510204 + -6.857142857x + x2 = -1 + 11.75510204

Combine like terms: -1 + 11.75510204 = 10.75510204
11.75510204 + -6.857142857x + x2 = 10.75510204

Factor a perfect square on the left side:
(x + -3.428571429)(x + -3.428571429) = 10.75510204

Calculate the square root of the right side: 3.279497224

Break this problem into two subproblems by setting 
(x + -3.428571429) equal to 3.279497224 and -3.279497224.

Subproblem 1

x + -3.428571429 = 3.279497224 Simplifying x + -3.428571429 = 3.279497224 Reorder the terms: -3.428571429 + x = 3.279497224 Solving -3.428571429 + x = 3.279497224 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 = 3.279497224 + 3.428571429 Combine like terms: -3.428571429 + 3.428571429 = 0.000000000 0.000000000 + x = 3.279497224 + 3.428571429 x = 3.279497224 + 3.428571429 Combine like terms: 3.279497224 + 3.428571429 = 6.708068653 x = 6.708068653 Simplifying x = 6.708068653

Subproblem 2

x + -3.428571429 = -3.279497224 Simplifying x + -3.428571429 = -3.279497224 Reorder the terms: -3.428571429 + x = -3.279497224 Solving -3.428571429 + x = -3.279497224 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 = -3.279497224 + 3.428571429 Combine like terms: -3.428571429 + 3.428571429 = 0.000000000 0.000000000 + x = -3.279497224 + 3.428571429 x = -3.279497224 + 3.428571429 Combine like terms: -3.279497224 + 3.428571429 = 0.149074205 x = 0.149074205 Simplifying x = 0.149074205

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.708068653, 0.149074205}

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