6x^2-25x+16=0

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Solution for 6x^2-25x+16=0 equation:


Simplifying
6x2 + -25x + 16 = 0

Reorder the terms:
16 + -25x + 6x2 = 0

Solving
16 + -25x + 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'.
2.666666667 + -4.166666667x + x2 = 0

Move the constant term to the right:

Add '-2.666666667' to each side of the equation.
2.666666667 + -4.166666667x + -2.666666667 + x2 = 0 + -2.666666667

Reorder the terms:
2.666666667 + -2.666666667 + -4.166666667x + x2 = 0 + -2.666666667

Combine like terms: 2.666666667 + -2.666666667 = 0.000000000
0.000000000 + -4.166666667x + x2 = 0 + -2.666666667
-4.166666667x + x2 = 0 + -2.666666667

Combine like terms: 0 + -2.666666667 = -2.666666667
-4.166666667x + x2 = -2.666666667

The x term is -4.166666667x.  Take half its coefficient (-2.083333334).
Square it (4.340277781) and add it to both sides.

Add '4.340277781' to each side of the equation.
-4.166666667x + 4.340277781 + x2 = -2.666666667 + 4.340277781

Reorder the terms:
4.340277781 + -4.166666667x + x2 = -2.666666667 + 4.340277781

Combine like terms: -2.666666667 + 4.340277781 = 1.673611114
4.340277781 + -4.166666667x + x2 = 1.673611114

Factor a perfect square on the left side:
(x + -2.083333334)(x + -2.083333334) = 1.673611114

Calculate the square root of the right side: 1.293681226

Break this problem into two subproblems by setting 
(x + -2.083333334) equal to 1.293681226 and -1.293681226.

Subproblem 1

x + -2.083333334 = 1.293681226 Simplifying x + -2.083333334 = 1.293681226 Reorder the terms: -2.083333334 + x = 1.293681226 Solving -2.083333334 + x = 1.293681226 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.083333334' to each side of the equation. -2.083333334 + 2.083333334 + x = 1.293681226 + 2.083333334 Combine like terms: -2.083333334 + 2.083333334 = 0.000000000 0.000000000 + x = 1.293681226 + 2.083333334 x = 1.293681226 + 2.083333334 Combine like terms: 1.293681226 + 2.083333334 = 3.37701456 x = 3.37701456 Simplifying x = 3.37701456

Subproblem 2

x + -2.083333334 = -1.293681226 Simplifying x + -2.083333334 = -1.293681226 Reorder the terms: -2.083333334 + x = -1.293681226 Solving -2.083333334 + x = -1.293681226 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.083333334' to each side of the equation. -2.083333334 + 2.083333334 + x = -1.293681226 + 2.083333334 Combine like terms: -2.083333334 + 2.083333334 = 0.000000000 0.000000000 + x = -1.293681226 + 2.083333334 x = -1.293681226 + 2.083333334 Combine like terms: -1.293681226 + 2.083333334 = 0.789652108 x = 0.789652108 Simplifying x = 0.789652108

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.37701456, 0.789652108}

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