7t(8-t)=15t^2(t-8) Срочно !

Question

7t(8-t)=15t^2(t-8) Срочно !

Answer 1

15t²(t-8)+7t(t-8)=0
t(t-8)(15t+7)=0
t=0
t-8=0⇒t=8
15t+7=0⇒t=-7/15

Answer 2

7t( 8 - t ) = 15t^2 ( t - 8 )
-7t ( t - 8 ) = 15t^2 ( t - 8 )
t1 = 8
- 7t = 15t^2
- 7 = 15t
t = - 7/15 ; Отает 8 ; - 7/15