5c^2-6c+8=0

Solution for 5c^2-6c+8=0 equation:

Simplifying
5c2 + -6c + 8 = 0

Reorder the terms:
8 + -6c + 5c2 = 0

Solving
8 + -6c + 5c2 = 0

Solving for variable 'c'.

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

Divide each side by '5'.
1.6 + -1.2c + c2 = 0

Move the constant term to the right:

Add '-1.6' to each side of the equation.
1.6 + -1.2c + -1.6 + c2 = 0 + -1.6

Reorder the terms:
1.6 + -1.6 + -1.2c + c2 = 0 + -1.6

Combine like terms: 1.6 + -1.6 = 0.0
0.0 + -1.2c + c2 = 0 + -1.6
-1.2c + c2 = 0 + -1.6

Combine like terms: 0 + -1.6 = -1.6
-1.2c + c2 = -1.6

The c term is -1.2c.  Take half its coefficient (-0.6).
Square it (0.36) and add it to both sides.

Add '0.36' to each side of the equation.
-1.2c + 0.36 + c2 = -1.6 + 0.36

Reorder the terms:
0.36 + -1.2c + c2 = -1.6 + 0.36

Combine like terms: -1.6 + 0.36 = -1.24
0.36 + -1.2c + c2 = -1.24

Factor a perfect square on the left side:
(c + -0.6)(c + -0.6) = -1.24

Can't calculate square root of the right side.

The solution to this equation could not be determined.