6x^2-16x+7=0

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Solution for 6x^2-16x+7=0 equation:


Simplifying
6x2 + -16x + 7 = 0

Reorder the terms:
7 + -16x + 6x2 = 0

Solving
7 + -16x + 6x2 = 0

Solving for variable 'x'.

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

Divide each side by '6'.
1.166666667 + -2.666666667x + x2 = 0

Move the constant term to the right:

Add '-1.166666667' to each side of the equation.
1.166666667 + -2.666666667x + -1.166666667 + x2 = 0 + -1.166666667

Reorder the terms:
1.166666667 + -1.166666667 + -2.666666667x + x2 = 0 + -1.166666667

Combine like terms: 1.166666667 + -1.166666667 = 0.000000000
0.000000000 + -2.666666667x + x2 = 0 + -1.166666667
-2.666666667x + x2 = 0 + -1.166666667

Combine like terms: 0 + -1.166666667 = -1.166666667
-2.666666667x + x2 = -1.166666667

The x term is -2.666666667x.  Take half its coefficient (-1.333333334).
Square it (1.777777780) and add it to both sides.

Add '1.777777780' to each side of the equation.
-2.666666667x + 1.777777780 + x2 = -1.166666667 + 1.777777780

Reorder the terms:
1.777777780 + -2.666666667x + x2 = -1.166666667 + 1.777777780

Combine like terms: -1.166666667 + 1.777777780 = 0.611111113
1.777777780 + -2.666666667x + x2 = 0.611111113

Factor a perfect square on the left side:
(x + -1.333333334)(x + -1.333333334) = 0.611111113

Calculate the square root of the right side: 0.781735961

Break this problem into two subproblems by setting 
(x + -1.333333334) equal to 0.781735961 and -0.781735961.

Subproblem 1

x + -1.333333334 = 0.781735961 Simplifying x + -1.333333334 = 0.781735961 Reorder the terms: -1.333333334 + x = 0.781735961 Solving -1.333333334 + x = 0.781735961 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.333333334' to each side of the equation. -1.333333334 + 1.333333334 + x = 0.781735961 + 1.333333334 Combine like terms: -1.333333334 + 1.333333334 = 0.000000000 0.000000000 + x = 0.781735961 + 1.333333334 x = 0.781735961 + 1.333333334 Combine like terms: 0.781735961 + 1.333333334 = 2.115069295 x = 2.115069295 Simplifying x = 2.115069295

Subproblem 2

x + -1.333333334 = -0.781735961 Simplifying x + -1.333333334 = -0.781735961 Reorder the terms: -1.333333334 + x = -0.781735961 Solving -1.333333334 + x = -0.781735961 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.333333334' to each side of the equation. -1.333333334 + 1.333333334 + x = -0.781735961 + 1.333333334 Combine like terms: -1.333333334 + 1.333333334 = 0.000000000 0.000000000 + x = -0.781735961 + 1.333333334 x = -0.781735961 + 1.333333334 Combine like terms: -0.781735961 + 1.333333334 = 0.551597373 x = 0.551597373 Simplifying x = 0.551597373

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.115069295, 0.551597373}

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