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Simplifying
(3t2 + -8) = 81
Reorder the terms:
(-8 + 3t2) = 81
Remove parenthesis around (-8 + 3t2)
-8 + 3t2 = 81
Solving
-8 + 3t2 = 81
Solving for variable 't'.
Move all terms containing t to the left, all other terms to the right.
Add '8' to each side of the equation.
-8 + 8 + 3t2 = 81 + 8
Combine like terms: -8 + 8 = 0
0 + 3t2 = 81 + 8
3t2 = 81 + 8
Combine like terms: 81 + 8 = 89
3t2 = 89
Divide each side by '3'.
t2 = 29.66666667
Simplifying
t2 = 29.66666667
Take the square root of each side:
t = {-5.446711546, 5.446711546}
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