-v^2+4v-36=0

Solution for -v^2+4v-36=0 equation:

Simplifying
-1v2 + 4v + -36 = 0

Reorder the terms:
-36 + 4v + -1v2 = 0

Solving
-36 + 4v + -1v2 = 0

Solving for variable 'v'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
36 + -4v + v2 = 0

Move the constant term to the right:

Add '-36' to each side of the equation.
36 + -4v + -36 + v2 = 0 + -36

Reorder the terms:
36 + -36 + -4v + v2 = 0 + -36

Combine like terms: 36 + -36 = 0
0 + -4v + v2 = 0 + -36
-4v + v2 = 0 + -36

Combine like terms: 0 + -36 = -36
-4v + v2 = -36

The v term is -4v.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4v + 4 + v2 = -36 + 4

Reorder the terms:
4 + -4v + v2 = -36 + 4

Combine like terms: -36 + 4 = -32
4 + -4v + v2 = -32

Factor a perfect square on the left side:
(v + -2)(v + -2) = -32

Can't calculate square root of the right side.

The solution to this equation could not be determined.