-0.5n^2-1n-2=0

Solution for -0.5n^2-1n-2=0 equation:

Simplifying
-0.5n2 + -1n + -2 = 0

Reorder the terms:
-2 + -1n + -0.5n2 = 0

Solving
-2 + -1n + -0.5n2 = 0

Solving for variable 'n'.

Begin completing the square.  Divide all terms by
-0.5 the coefficient of the squared term: 

Divide each side by '-0.5'.
4 + 2n + n2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + 2n + -4 + n2 = 0 + -4

Reorder the terms:
4 + -4 + 2n + n2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 2n + n2 = 0 + -4
2n + n2 = 0 + -4

Combine like terms: 0 + -4 = -4
2n + n2 = -4

The n term is 2n.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2n + 1 + n2 = -4 + 1

Reorder the terms:
1 + 2n + n2 = -4 + 1

Combine like terms: -4 + 1 = -3
1 + 2n + n2 = -3

Factor a perfect square on the left side:
(n + 1)(n + 1) = -3

Can't calculate square root of the right side.

The solution to this equation could not be determined.