7x^2-19x+6=0

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Solution for 7x^2-19x+6=0 equation:


Simplifying
7x2 + -19x + 6 = 0

Reorder the terms:
6 + -19x + 7x2 = 0

Solving
6 + -19x + 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'.
0.8571428571 + -2.714285714x + x2 = 0

Move the constant term to the right:

Add '-0.8571428571' to each side of the equation.
0.8571428571 + -2.714285714x + -0.8571428571 + x2 = 0 + -0.8571428571

Reorder the terms:
0.8571428571 + -0.8571428571 + -2.714285714x + x2 = 0 + -0.8571428571

Combine like terms: 0.8571428571 + -0.8571428571 = 0.0000000000
0.0000000000 + -2.714285714x + x2 = 0 + -0.8571428571
-2.714285714x + x2 = 0 + -0.8571428571

Combine like terms: 0 + -0.8571428571 = -0.8571428571
-2.714285714x + x2 = -0.8571428571

The x term is -2.714285714x.  Take half its coefficient (-1.357142857).
Square it (1.841836734) and add it to both sides.

Add '1.841836734' to each side of the equation.
-2.714285714x + 1.841836734 + x2 = -0.8571428571 + 1.841836734

Reorder the terms:
1.841836734 + -2.714285714x + x2 = -0.8571428571 + 1.841836734

Combine like terms: -0.8571428571 + 1.841836734 = 0.9846938769
1.841836734 + -2.714285714x + x2 = 0.9846938769

Factor a perfect square on the left side:
(x + -1.357142857)(x + -1.357142857) = 0.9846938769

Calculate the square root of the right side: 0.992317427

Break this problem into two subproblems by setting 
(x + -1.357142857) equal to 0.992317427 and -0.992317427.

Subproblem 1

x + -1.357142857 = 0.992317427 Simplifying x + -1.357142857 = 0.992317427 Reorder the terms: -1.357142857 + x = 0.992317427 Solving -1.357142857 + x = 0.992317427 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.357142857' to each side of the equation. -1.357142857 + 1.357142857 + x = 0.992317427 + 1.357142857 Combine like terms: -1.357142857 + 1.357142857 = 0.000000000 0.000000000 + x = 0.992317427 + 1.357142857 x = 0.992317427 + 1.357142857 Combine like terms: 0.992317427 + 1.357142857 = 2.349460284 x = 2.349460284 Simplifying x = 2.349460284

Subproblem 2

x + -1.357142857 = -0.992317427 Simplifying x + -1.357142857 = -0.992317427 Reorder the terms: -1.357142857 + x = -0.992317427 Solving -1.357142857 + x = -0.992317427 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.357142857' to each side of the equation. -1.357142857 + 1.357142857 + x = -0.992317427 + 1.357142857 Combine like terms: -1.357142857 + 1.357142857 = 0.000000000 0.000000000 + x = -0.992317427 + 1.357142857 x = -0.992317427 + 1.357142857 Combine like terms: -0.992317427 + 1.357142857 = 0.36482543 x = 0.36482543 Simplifying x = 0.36482543

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.349460284, 0.36482543}

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