Решите: 15* (1/5)^2 - 8* 1/5

Question

Решите: 15* (1/5)^2 - 8* 1/5

Answer 1

15*(1/5)(1/5)-8*1/5=1/5(15*1/5-8)=1/5*(3-8)=1/5*(-5)=-1

Answer 2

=15/1 *1/25 -8*1/5= 3/5-41/5=- 38/5=- 7* 3/5