t^2-9t=-18

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Solution for t^2-9t=-18 equation:


Simplifying
t2 + -9t = -18

Reorder the terms:
-9t + t2 = -18

Solving
-9t + t2 = -18

Solving for variable 't'.

Reorder the terms:
18 + -9t + t2 = -18 + 18

Combine like terms: -18 + 18 = 0
18 + -9t + t2 = 0

Factor a trinomial.
(3 + -1t)(6 + -1t) = 0

Subproblem 1

Set the factor '(3 + -1t)' equal to zero and attempt to solve: Simplifying 3 + -1t = 0 Solving 3 + -1t = 0 Move all terms containing t to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1t = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1t = 0 + -3 -1t = 0 + -3 Combine like terms: 0 + -3 = -3 -1t = -3 Divide each side by '-1'. t = 3 Simplifying t = 3

Subproblem 2

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

Solution

t = {3, 6}

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