4x^2-47x+16=0

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Solution for 4x^2-47x+16=0 equation:


Simplifying
4x2 + -47x + 16 = 0

Reorder the terms:
16 + -47x + 4x2 = 0

Solving
16 + -47x + 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'.
4 + -11.75x + x2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + -11.75x + -4 + x2 = 0 + -4

Reorder the terms:
4 + -4 + -11.75x + x2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -11.75x + x2 = 0 + -4
-11.75x + x2 = 0 + -4

Combine like terms: 0 + -4 = -4
-11.75x + x2 = -4

The x term is -11.75x.  Take half its coefficient (-5.875).
Square it (34.515625) and add it to both sides.

Add '34.515625' to each side of the equation.
-11.75x + 34.515625 + x2 = -4 + 34.515625

Reorder the terms:
34.515625 + -11.75x + x2 = -4 + 34.515625

Combine like terms: -4 + 34.515625 = 30.515625
34.515625 + -11.75x + x2 = 30.515625

Factor a perfect square on the left side:
(x + -5.875)(x + -5.875) = 30.515625

Calculate the square root of the right side: 5.524094948

Break this problem into two subproblems by setting 
(x + -5.875) equal to 5.524094948 and -5.524094948.

Subproblem 1

x + -5.875 = 5.524094948 Simplifying x + -5.875 = 5.524094948 Reorder the terms: -5.875 + x = 5.524094948 Solving -5.875 + x = 5.524094948 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.875' to each side of the equation. -5.875 + 5.875 + x = 5.524094948 + 5.875 Combine like terms: -5.875 + 5.875 = 0.000 0.000 + x = 5.524094948 + 5.875 x = 5.524094948 + 5.875 Combine like terms: 5.524094948 + 5.875 = 11.399094948 x = 11.399094948 Simplifying x = 11.399094948

Subproblem 2

x + -5.875 = -5.524094948 Simplifying x + -5.875 = -5.524094948 Reorder the terms: -5.875 + x = -5.524094948 Solving -5.875 + x = -5.524094948 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.875' to each side of the equation. -5.875 + 5.875 + x = -5.524094948 + 5.875 Combine like terms: -5.875 + 5.875 = 0.000 0.000 + x = -5.524094948 + 5.875 x = -5.524094948 + 5.875 Combine like terms: -5.524094948 + 5.875 = 0.350905052 x = 0.350905052 Simplifying x = 0.350905052

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.399094948, 0.350905052}

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