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381=1/2*9.8t^2
We move all terms to the left:
381-(1/2*9.8t^2)=0
Domain of the equation: 2*9.8t^2)!=0We get rid of parentheses
t!=0/1
t!=0
t∈R
-1/2*9.8t^2+381=0
We multiply all the terms by the denominator
381*2*9.8t^2-1=0
Wy multiply elements
6858t*9-1=0
Wy multiply elements
61722t-1=0
We move all terms containing t to the left, all other terms to the right
61722t=1
t=1/61722
t=1/61722
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