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Simplifying
0 = -5t2 + 20 + 60
Reorder the terms:
0 = 20 + 60 + -5t2
Combine like terms: 20 + 60 = 80
0 = 80 + -5t2
Solving
0 = 80 + -5t2
Solving for variable 't'.
Move all terms containing t to the left, all other terms to the right.
Add '5t2' to each side of the equation.
0 + 5t2 = 80 + -5t2 + 5t2
Remove the zero:
5t2 = 80 + -5t2 + 5t2
Combine like terms: -5t2 + 5t2 = 0
5t2 = 80 + 0
5t2 = 80
Divide each side by '5'.
t2 = 16
Simplifying
t2 = 16
Take the square root of each side:
t = {-4, 4}
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