t^2+8t=9

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Solution for t^2+8t=9 equation:


Simplifying
t2 + 8t = 9

Reorder the terms:
8t + t2 = 9

Solving
8t + t2 = 9

Solving for variable 't'.

Reorder the terms:
-9 + 8t + t2 = 9 + -9

Combine like terms: 9 + -9 = 0
-9 + 8t + t2 = 0

Factor a trinomial.
(-9 + -1t)(1 + -1t) = 0

Subproblem 1

Set the factor '(-9 + -1t)' equal to zero and attempt to solve: Simplifying -9 + -1t = 0 Solving -9 + -1t = 0 Move all terms containing t to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -1t = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1t = 0 + 9 -1t = 0 + 9 Combine like terms: 0 + 9 = 9 -1t = 9 Divide each side by '-1'. t = -9 Simplifying t = -9

Subproblem 2

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

Solution

t = {-9, 1}

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