Question

-5m(5m+5)+(5m-5)(5+5m) m=9.8​

Answer 1

Ответ:

-5m(5m+5)+(5m-5)(5+5m)= -25m²-25m+(25m+25m²-25-25m) = -25m²-25m+25m+25m²-25-25m = -25m²+25m²-25m+25m-25m-25

= -25m-25

Если m=9,8, то -25*9,8-25= -245-25= -270