7x^2-14x+5=0

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Solution for 7x^2-14x+5=0 equation:


Simplifying
7x2 + -14x + 5 = 0

Reorder the terms:
5 + -14x + 7x2 = 0

Solving
5 + -14x + 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'.
0.7142857143 + -2x + x2 = 0

Move the constant term to the right:

Add '-0.7142857143' to each side of the equation.
0.7142857143 + -2x + -0.7142857143 + x2 = 0 + -0.7142857143

Reorder the terms:
0.7142857143 + -0.7142857143 + -2x + x2 = 0 + -0.7142857143

Combine like terms: 0.7142857143 + -0.7142857143 = 0.0000000000
0.0000000000 + -2x + x2 = 0 + -0.7142857143
-2x + x2 = 0 + -0.7142857143

Combine like terms: 0 + -0.7142857143 = -0.7142857143
-2x + x2 = -0.7142857143

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -0.7142857143 + 1

Reorder the terms:
1 + -2x + x2 = -0.7142857143 + 1

Combine like terms: -0.7142857143 + 1 = 0.2857142857
1 + -2x + x2 = 0.2857142857

Factor a perfect square on the left side:
(x + -1)(x + -1) = 0.2857142857

Calculate the square root of the right side: 0.534522484

Break this problem into two subproblems by setting 
(x + -1) equal to 0.534522484 and -0.534522484.

Subproblem 1

x + -1 = 0.534522484 Simplifying x + -1 = 0.534522484 Reorder the terms: -1 + x = 0.534522484 Solving -1 + x = 0.534522484 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 0.534522484 + 1 Combine like terms: -1 + 1 = 0 0 + x = 0.534522484 + 1 x = 0.534522484 + 1 Combine like terms: 0.534522484 + 1 = 1.534522484 x = 1.534522484 Simplifying x = 1.534522484

Subproblem 2

x + -1 = -0.534522484 Simplifying x + -1 = -0.534522484 Reorder the terms: -1 + x = -0.534522484 Solving -1 + x = -0.534522484 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -0.534522484 + 1 Combine like terms: -1 + 1 = 0 0 + x = -0.534522484 + 1 x = -0.534522484 + 1 Combine like terms: -0.534522484 + 1 = 0.465477516 x = 0.465477516 Simplifying x = 0.465477516

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.534522484, 0.465477516}

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