3x^2-11x+5=0

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Solution for 3x^2-11x+5=0 equation:


Simplifying
3x2 + -11x + 5 = 0

Reorder the terms:
5 + -11x + 3x2 = 0

Solving
5 + -11x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
1.666666667 + -3.666666667x + x2 = 0

Move the constant term to the right:

Add '-1.666666667' to each side of the equation.
1.666666667 + -3.666666667x + -1.666666667 + x2 = 0 + -1.666666667

Reorder the terms:
1.666666667 + -1.666666667 + -3.666666667x + x2 = 0 + -1.666666667

Combine like terms: 1.666666667 + -1.666666667 = 0.000000000
0.000000000 + -3.666666667x + x2 = 0 + -1.666666667
-3.666666667x + x2 = 0 + -1.666666667

Combine like terms: 0 + -1.666666667 = -1.666666667
-3.666666667x + x2 = -1.666666667

The x term is -3.666666667x.  Take half its coefficient (-1.833333334).
Square it (3.361111114) and add it to both sides.

Add '3.361111114' to each side of the equation.
-3.666666667x + 3.361111114 + x2 = -1.666666667 + 3.361111114

Reorder the terms:
3.361111114 + -3.666666667x + x2 = -1.666666667 + 3.361111114

Combine like terms: -1.666666667 + 3.361111114 = 1.694444447
3.361111114 + -3.666666667x + x2 = 1.694444447

Factor a perfect square on the left side:
(x + -1.833333334)(x + -1.833333334) = 1.694444447

Calculate the square root of the right side: 1.30170828

Break this problem into two subproblems by setting 
(x + -1.833333334) equal to 1.30170828 and -1.30170828.

Subproblem 1

x + -1.833333334 = 1.30170828 Simplifying x + -1.833333334 = 1.30170828 Reorder the terms: -1.833333334 + x = 1.30170828 Solving -1.833333334 + x = 1.30170828 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.833333334' to each side of the equation. -1.833333334 + 1.833333334 + x = 1.30170828 + 1.833333334 Combine like terms: -1.833333334 + 1.833333334 = 0.000000000 0.000000000 + x = 1.30170828 + 1.833333334 x = 1.30170828 + 1.833333334 Combine like terms: 1.30170828 + 1.833333334 = 3.135041614 x = 3.135041614 Simplifying x = 3.135041614

Subproblem 2

x + -1.833333334 = -1.30170828 Simplifying x + -1.833333334 = -1.30170828 Reorder the terms: -1.833333334 + x = -1.30170828 Solving -1.833333334 + x = -1.30170828 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.833333334' to each side of the equation. -1.833333334 + 1.833333334 + x = -1.30170828 + 1.833333334 Combine like terms: -1.833333334 + 1.833333334 = 0.000000000 0.000000000 + x = -1.30170828 + 1.833333334 x = -1.30170828 + 1.833333334 Combine like terms: -1.30170828 + 1.833333334 = 0.531625054 x = 0.531625054 Simplifying x = 0.531625054

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.135041614, 0.531625054}

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