Question

Resolver:
125=2t^2+15t

Answer 1

$125= 2t^{2} +15t$

$2t^{2} +15t -125 = 0$

2t          +25
t              -5

-10t + 25t  = 15t

(2t +25)(t-5)=0

2t +25 = 0         t - 5 = 0
2t = -25             t = 5
t=-25/2        

cs= (-25/2; 5)