7x^2-17x+3=0

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Solution for 7x^2-17x+3=0 equation:


Simplifying
7x2 + -17x + 3 = 0

Reorder the terms:
3 + -17x + 7x2 = 0

Solving
3 + -17x + 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'.
0.4285714286 + -2.428571429x + x2 = 0

Move the constant term to the right:

Add '-0.4285714286' to each side of the equation.
0.4285714286 + -2.428571429x + -0.4285714286 + x2 = 0 + -0.4285714286

Reorder the terms:
0.4285714286 + -0.4285714286 + -2.428571429x + x2 = 0 + -0.4285714286

Combine like terms: 0.4285714286 + -0.4285714286 = 0.0000000000
0.0000000000 + -2.428571429x + x2 = 0 + -0.4285714286
-2.428571429x + x2 = 0 + -0.4285714286

Combine like terms: 0 + -0.4285714286 = -0.4285714286
-2.428571429x + x2 = -0.4285714286

The x term is -2.428571429x.  Take half its coefficient (-1.214285715).
Square it (1.474489798) and add it to both sides.

Add '1.474489798' to each side of the equation.
-2.428571429x + 1.474489798 + x2 = -0.4285714286 + 1.474489798

Reorder the terms:
1.474489798 + -2.428571429x + x2 = -0.4285714286 + 1.474489798

Combine like terms: -0.4285714286 + 1.474489798 = 1.0459183694
1.474489798 + -2.428571429x + x2 = 1.0459183694

Factor a perfect square on the left side:
(x + -1.214285715)(x + -1.214285715) = 1.0459183694

Calculate the square root of the right side: 1.022701506

Break this problem into two subproblems by setting 
(x + -1.214285715) equal to 1.022701506 and -1.022701506.

Subproblem 1

x + -1.214285715 = 1.022701506 Simplifying x + -1.214285715 = 1.022701506 Reorder the terms: -1.214285715 + x = 1.022701506 Solving -1.214285715 + x = 1.022701506 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.214285715' to each side of the equation. -1.214285715 + 1.214285715 + x = 1.022701506 + 1.214285715 Combine like terms: -1.214285715 + 1.214285715 = 0.000000000 0.000000000 + x = 1.022701506 + 1.214285715 x = 1.022701506 + 1.214285715 Combine like terms: 1.022701506 + 1.214285715 = 2.236987221 x = 2.236987221 Simplifying x = 2.236987221

Subproblem 2

x + -1.214285715 = -1.022701506 Simplifying x + -1.214285715 = -1.022701506 Reorder the terms: -1.214285715 + x = -1.022701506 Solving -1.214285715 + x = -1.022701506 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.214285715' to each side of the equation. -1.214285715 + 1.214285715 + x = -1.022701506 + 1.214285715 Combine like terms: -1.214285715 + 1.214285715 = 0.000000000 0.000000000 + x = -1.022701506 + 1.214285715 x = -1.022701506 + 1.214285715 Combine like terms: -1.022701506 + 1.214285715 = 0.191584209 x = 0.191584209 Simplifying x = 0.191584209

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.236987221, 0.191584209}

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