z^2-10z-39=

Solution for z^2-10z-39= equation:

Simplifying
z2 + -10z + -39 = 0

Reorder the terms:
-39 + -10z + z2 = 0

Solving
-39 + -10z + z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(-3 + -1z)(13 + -1z) = 0

Subproblem 1
Set the factor '(-3 + -1z)' equal to zero and attempt to solve:

Simplifying
-3 + -1z = 0

Solving
-3 + -1z = 0

Move all terms containing z to the left, all other terms to the right.

Add '3' to each side of the equation.
-3 + 3 + -1z = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -1z = 0 + 3
-1z = 0 + 3

Combine like terms: 0 + 3 = 3
-1z = 3

Divide each side by '-1'.
z = -3

Simplifying
z = -3
Subproblem 2
Set the factor '(13 + -1z)' equal to zero and attempt to solve:

Simplifying
13 + -1z = 0

Solving
13 + -1z = 0

Move all terms containing z to the left, all other terms to the right.

Add '-13' to each side of the equation.
13 + -13 + -1z = 0 + -13

Combine like terms: 13 + -13 = 0
0 + -1z = 0 + -13
-1z = 0 + -13

Combine like terms: 0 + -13 = -13
-1z = -13

Divide each side by '-1'.
z = 13

Simplifying
z = 13
Solution
z = {-3, 13}