-30=-t-t^2

Solution for -30=-t-t^2 equation:

Simplifying
-30 = -1t + -1t2

Solving
-30 = -1t + -1t2

Solving for variable 't'.

Reorder the terms:
-30 + t + t2 = -1t + t + -1t2 + t2

Combine like terms: -1t + t = 0
-30 + t + t2 = 0 + -1t2 + t2
-30 + t + t2 = -1t2 + t2

Combine like terms: -1t2 + t2 = 0
-30 + t + t2 = 0

Factor a trinomial.
(-6 + -1t)(5 + -1t) = 0

Subproblem 1
Set the factor '(-6 + -1t)' equal to zero and attempt to solve:

Simplifying
-6 + -1t = 0

Solving
-6 + -1t = 0

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

Add '6' to each side of the equation.
-6 + 6 + -1t = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -1t = 0 + 6
-1t = 0 + 6

Combine like terms: 0 + 6 = 6
-1t = 6

Divide each side by '-1'.
t = -6

Simplifying
t = -6
Subproblem 2
Set the factor '(5 + -1t)' equal to zero and attempt to solve:

Simplifying
5 + -1t = 0

Solving
5 + -1t = 0

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

Add '-5' to each side of the equation.
5 + -5 + -1t = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -1t = 0 + -5
-1t = 0 + -5

Combine like terms: 0 + -5 = -5
-1t = -5

Divide each side by '-1'.
t = 5

Simplifying
t = 5
Solution
t = {-6, 5}