(t+18)(t-2)=0

Solution for (t+18)(t-2)=0 equation:

Simplifying
(t + 18)(t + -2) = 0

Reorder the terms:
(18 + t)(t + -2) = 0

Reorder the terms:
(18 + t)(-2 + t) = 0

Multiply (18 + t) * (-2 + t)
(18(-2 + t) + t(-2 + t)) = 0
((-2 * 18 + t * 18) + t(-2 + t)) = 0
((-36 + 18t) + t(-2 + t)) = 0
(-36 + 18t + (-2 * t + t * t)) = 0
(-36 + 18t + (-2t + t2)) = 0

Combine like terms: 18t + -2t = 16t
(-36 + 16t + t2) = 0

Solving
-36 + 16t + t2 = 0

Solving for variable 't'.

Factor a trinomial.
(-18 + -1t)(2 + -1t) = 0

Subproblem 1
Set the factor '(-18 + -1t)' equal to zero and attempt to solve:

Simplifying
-18 + -1t = 0

Solving
-18 + -1t = 0

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

Add '18' to each side of the equation.
-18 + 18 + -1t = 0 + 18

Combine like terms: -18 + 18 = 0
0 + -1t = 0 + 18
-1t = 0 + 18

Combine like terms: 0 + 18 = 18
-1t = 18

Divide each side by '-1'.
t = -18

Simplifying
t = -18
Subproblem 2
Set the factor '(2 + -1t)' equal to zero and attempt to solve:

Simplifying
2 + -1t = 0

Solving
2 + -1t = 0

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

Add '-2' to each side of the equation.
2 + -2 + -1t = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -1t = 0 + -2
-1t = 0 + -2

Combine like terms: 0 + -2 = -2
-1t = -2

Divide each side by '-1'.
t = 2

Simplifying
t = 2
Solution
t = {-18, 2}