SOLUTION: can you determine d, if given the quadratic formula d=-5t2+10t+5 ? and you have no other information?

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: can you determine d, if given the quadratic formula d=-5t2+10t+5 ? and you have no other information?      Log On


   

Question 289946: can you determine d, if given the quadratic formula d=-5t2+10t+5 ? and you have no other information?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
No. You can graph it.
Because it equals -5*(t^2-2 t-1) and it crosses the t axis at 1-sqrt(2) and 1+sqrt(2). Those are its zeros.