7x^2-42x+59=0

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Solution for 7x^2-42x+59=0 equation:


Simplifying
7x2 + -42x + 59 = 0

Reorder the terms:
59 + -42x + 7x2 = 0

Solving
59 + -42x + 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'.
8.428571429 + -6x + x2 = 0

Move the constant term to the right:

Add '-8.428571429' to each side of the equation.
8.428571429 + -6x + -8.428571429 + x2 = 0 + -8.428571429

Reorder the terms:
8.428571429 + -8.428571429 + -6x + x2 = 0 + -8.428571429

Combine like terms: 8.428571429 + -8.428571429 = 0.000000000
0.000000000 + -6x + x2 = 0 + -8.428571429
-6x + x2 = 0 + -8.428571429

Combine like terms: 0 + -8.428571429 = -8.428571429
-6x + x2 = -8.428571429

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = -8.428571429 + 9

Reorder the terms:
9 + -6x + x2 = -8.428571429 + 9

Combine like terms: -8.428571429 + 9 = 0.571428571
9 + -6x + x2 = 0.571428571

Factor a perfect square on the left side:
(x + -3)(x + -3) = 0.571428571

Calculate the square root of the right side: 0.755928946

Break this problem into two subproblems by setting 
(x + -3) equal to 0.755928946 and -0.755928946.

Subproblem 1

x + -3 = 0.755928946 Simplifying x + -3 = 0.755928946 Reorder the terms: -3 + x = 0.755928946 Solving -3 + x = 0.755928946 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 0.755928946 + 3 Combine like terms: -3 + 3 = 0 0 + x = 0.755928946 + 3 x = 0.755928946 + 3 Combine like terms: 0.755928946 + 3 = 3.755928946 x = 3.755928946 Simplifying x = 3.755928946

Subproblem 2

x + -3 = -0.755928946 Simplifying x + -3 = -0.755928946 Reorder the terms: -3 + x = -0.755928946 Solving -3 + x = -0.755928946 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -0.755928946 + 3 Combine like terms: -3 + 3 = 0 0 + x = -0.755928946 + 3 x = -0.755928946 + 3 Combine like terms: -0.755928946 + 3 = 2.244071054 x = 2.244071054 Simplifying x = 2.244071054

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.755928946, 2.244071054}

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