7x^2-46x+5=0

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Solution for 7x^2-46x+5=0 equation:


Simplifying
7x2 + -46x + 5 = 0

Reorder the terms:
5 + -46x + 7x2 = 0

Solving
5 + -46x + 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 + -6.571428571x + x2 = 0

Move the constant term to the right:

Add '-0.7142857143' to each side of the equation.
0.7142857143 + -6.571428571x + -0.7142857143 + x2 = 0 + -0.7142857143

Reorder the terms:
0.7142857143 + -0.7142857143 + -6.571428571x + x2 = 0 + -0.7142857143

Combine like terms: 0.7142857143 + -0.7142857143 = 0.0000000000
0.0000000000 + -6.571428571x + x2 = 0 + -0.7142857143
-6.571428571x + x2 = 0 + -0.7142857143

Combine like terms: 0 + -0.7142857143 = -0.7142857143
-6.571428571x + x2 = -0.7142857143

The x term is -6.571428571x.  Take half its coefficient (-3.285714286).
Square it (10.79591837) and add it to both sides.

Add '10.79591837' to each side of the equation.
-6.571428571x + 10.79591837 + x2 = -0.7142857143 + 10.79591837

Reorder the terms:
10.79591837 + -6.571428571x + x2 = -0.7142857143 + 10.79591837

Combine like terms: -0.7142857143 + 10.79591837 = 10.0816326557
10.79591837 + -6.571428571x + x2 = 10.0816326557

Factor a perfect square on the left side:
(x + -3.285714286)(x + -3.285714286) = 10.0816326557

Calculate the square root of the right side: 3.175158682

Break this problem into two subproblems by setting 
(x + -3.285714286) equal to 3.175158682 and -3.175158682.

Subproblem 1

x + -3.285714286 = 3.175158682 Simplifying x + -3.285714286 = 3.175158682 Reorder the terms: -3.285714286 + x = 3.175158682 Solving -3.285714286 + x = 3.175158682 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.285714286' to each side of the equation. -3.285714286 + 3.285714286 + x = 3.175158682 + 3.285714286 Combine like terms: -3.285714286 + 3.285714286 = 0.000000000 0.000000000 + x = 3.175158682 + 3.285714286 x = 3.175158682 + 3.285714286 Combine like terms: 3.175158682 + 3.285714286 = 6.460872968 x = 6.460872968 Simplifying x = 6.460872968

Subproblem 2

x + -3.285714286 = -3.175158682 Simplifying x + -3.285714286 = -3.175158682 Reorder the terms: -3.285714286 + x = -3.175158682 Solving -3.285714286 + x = -3.175158682 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.285714286' to each side of the equation. -3.285714286 + 3.285714286 + x = -3.175158682 + 3.285714286 Combine like terms: -3.285714286 + 3.285714286 = 0.000000000 0.000000000 + x = -3.175158682 + 3.285714286 x = -3.175158682 + 3.285714286 Combine like terms: -3.175158682 + 3.285714286 = 0.110555604 x = 0.110555604 Simplifying x = 0.110555604

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.460872968, 0.110555604}

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