How do you isolate this equation ?

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Homework Statement



I am having trouble isolating this equations for time

d= V1(t) - 0.5 (a) (t2)
2. The attempt at a solution

I get this:

d-0.5(a)(t2) = t
that is all over V1
 

Discussion

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that's a quadratic equation in t;
it has two solutions for t , given by the "quadratic formula".
 

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