t^2=2t+15

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Solution for t^2=2t+15 equation:


Simplifying
t2 = 2t + 15

Reorder the terms:
t2 = 15 + 2t

Solving
t2 = 15 + 2t

Solving for variable 't'.

Reorder the terms:
-15 + -2t + t2 = 15 + 2t + -15 + -2t

Reorder the terms:
-15 + -2t + t2 = 15 + -15 + 2t + -2t

Combine like terms: 15 + -15 = 0
-15 + -2t + t2 = 0 + 2t + -2t
-15 + -2t + t2 = 2t + -2t

Combine like terms: 2t + -2t = 0
-15 + -2t + t2 = 0

Factor a trinomial.
(-3 + -1t)(5 + -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 '(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 = {-3, 5}

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