-16t^{2}+40t=0

i solved like his

-16t^{2}=-40

-16/-40 = 2.5t

i got i right, but i'm still confused and feel like i got it right out of coincidence, becase why does he second power disappear?

Guest Oct 6, 2022

#1**0 **

-16t2+40t=0

i solved like his

-16t2=-40

-16/-40 = 2.5t

*why does he second power disappear*

It looks wrong because you left the "t" off the 40t when you took it to the other side.

it __should__ have looked like this **–16t ^{2} = –40t**

Except I'd have first multiplied both sides by –1

16t^{2} = 40t

divide both sides by 8t and obtain 2t = 5

divide both sides by 2 and obtain t = 5/2 = 2**.**5

_{.}

Guest Oct 6, 2022