5x^2-11x+80=0

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Solution for 5x^2-11x+80=0 equation:


Simplifying
5x2 + -11x + 80 = 0

Reorder the terms:
80 + -11x + 5x2 = 0

Solving
80 + -11x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
16 + -2.2x + x2 = 0

Move the constant term to the right:

Add '-16' to each side of the equation.
16 + -2.2x + -16 + x2 = 0 + -16

Reorder the terms:
16 + -16 + -2.2x + x2 = 0 + -16

Combine like terms: 16 + -16 = 0
0 + -2.2x + x2 = 0 + -16
-2.2x + x2 = 0 + -16

Combine like terms: 0 + -16 = -16
-2.2x + x2 = -16

The x term is -2.2x.  Take half its coefficient (-1.1).
Square it (1.21) and add it to both sides.

Add '1.21' to each side of the equation.
-2.2x + 1.21 + x2 = -16 + 1.21

Reorder the terms:
1.21 + -2.2x + x2 = -16 + 1.21

Combine like terms: -16 + 1.21 = -14.79
1.21 + -2.2x + x2 = -14.79

Factor a perfect square on the left side:
(x + -1.1)(x + -1.1) = -14.79

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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