4x^2-41x+71=0

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Solution for 4x^2-41x+71=0 equation:


Simplifying
4x2 + -41x + 71 = 0

Reorder the terms:
71 + -41x + 4x2 = 0

Solving
71 + -41x + 4x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
4 the coefficient of the squared term: 

Divide each side by '4'.
17.75 + -10.25x + x2 = 0

Move the constant term to the right:

Add '-17.75' to each side of the equation.
17.75 + -10.25x + -17.75 + x2 = 0 + -17.75

Reorder the terms:
17.75 + -17.75 + -10.25x + x2 = 0 + -17.75

Combine like terms: 17.75 + -17.75 = 0.00
0.00 + -10.25x + x2 = 0 + -17.75
-10.25x + x2 = 0 + -17.75

Combine like terms: 0 + -17.75 = -17.75
-10.25x + x2 = -17.75

The x term is -10.25x.  Take half its coefficient (-5.125).
Square it (26.265625) and add it to both sides.

Add '26.265625' to each side of the equation.
-10.25x + 26.265625 + x2 = -17.75 + 26.265625

Reorder the terms:
26.265625 + -10.25x + x2 = -17.75 + 26.265625

Combine like terms: -17.75 + 26.265625 = 8.515625
26.265625 + -10.25x + x2 = 8.515625

Factor a perfect square on the left side:
(x + -5.125)(x + -5.125) = 8.515625

Calculate the square root of the right side: 2.918154382

Break this problem into two subproblems by setting 
(x + -5.125) equal to 2.918154382 and -2.918154382.

Subproblem 1

x + -5.125 = 2.918154382 Simplifying x + -5.125 = 2.918154382 Reorder the terms: -5.125 + x = 2.918154382 Solving -5.125 + x = 2.918154382 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.125' to each side of the equation. -5.125 + 5.125 + x = 2.918154382 + 5.125 Combine like terms: -5.125 + 5.125 = 0.000 0.000 + x = 2.918154382 + 5.125 x = 2.918154382 + 5.125 Combine like terms: 2.918154382 + 5.125 = 8.043154382 x = 8.043154382 Simplifying x = 8.043154382

Subproblem 2

x + -5.125 = -2.918154382 Simplifying x + -5.125 = -2.918154382 Reorder the terms: -5.125 + x = -2.918154382 Solving -5.125 + x = -2.918154382 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.125' to each side of the equation. -5.125 + 5.125 + x = -2.918154382 + 5.125 Combine like terms: -5.125 + 5.125 = 0.000 0.000 + x = -2.918154382 + 5.125 x = -2.918154382 + 5.125 Combine like terms: -2.918154382 + 5.125 = 2.206845618 x = 2.206845618 Simplifying x = 2.206845618

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.043154382, 2.206845618}

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