Question

Помогите плиз. Вычислите: 7^-7*7^-8/7^-13 

Answer 1

1) 7 ^ (-7) * 7 ^ ( -8) = 7 ^ ( -7 + ( -8)) = 7 ^ ( - 15 )
2) 7 ^ (-15) / 7 ^ (-13) = 7 ^ ( - 15 - ( - 13)) = 7 ^ ( - 15 + 13) = 7 ^ ( - 2 ) = 1/49