-r^2-5r-6=o

Solution for -r^2-5r-6=o equation:

Simplifying
-1r2 + -5r + -6 = o

Reorder the terms:
-6 + -5r + -1r2 = o

Solving
-6 + -5r + -1r2 = o

Solving for variable 'r'.

Reorder the terms:
-6 + -1o + -5r + -1r2 = o + -1o

Combine like terms: o + -1o = 0
-6 + -1o + -5r + -1r2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(6 + o + 5r + r2) = 0

Ignore the factor -1.
Subproblem 1
Set the factor '(6 + o + 5r + r2)' equal to zero and attempt to solve:

Simplifying
6 + o + 5r + r2 = 0

Solving
6 + o + 5r + r2 = 0

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.