-11x^2+47x-64=0

Solution for -11x^2+47x-64=0 equation:

Simplifying
-11x2 + 47x + -64 = 0

Reorder the terms:
-64 + 47x + -11x2 = 0

Solving
-64 + 47x + -11x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-11 the coefficient of the squared term: 

Divide each side by '-11'.
5.818181818 + -4.272727273x + x2 = 0

Move the constant term to the right:

Add '-5.818181818' to each side of the equation.
5.818181818 + -4.272727273x + -5.818181818 + x2 = 0 + -5.818181818

Reorder the terms:
5.818181818 + -5.818181818 + -4.272727273x + x2 = 0 + -5.818181818

Combine like terms: 5.818181818 + -5.818181818 = 0.000000000
0.000000000 + -4.272727273x + x2 = 0 + -5.818181818
-4.272727273x + x2 = 0 + -5.818181818

Combine like terms: 0 + -5.818181818 = -5.818181818
-4.272727273x + x2 = -5.818181818

The x term is -4.272727273x.  Take half its coefficient (-2.136363637).
Square it (4.564049590) and add it to both sides.

Add '4.564049590' to each side of the equation.
-4.272727273x + 4.564049590 + x2 = -5.818181818 + 4.564049590

Reorder the terms:
4.564049590 + -4.272727273x + x2 = -5.818181818 + 4.564049590

Combine like terms: -5.818181818 + 4.564049590 = -1.254132228
4.564049590 + -4.272727273x + x2 = -1.254132228

Factor a perfect square on the left side:
(x + -2.136363637)(x + -2.136363637) = -1.254132228

Can't calculate square root of the right side.

The solution to this equation could not be determined.