Question

срочно!!!!!!5,6,7!!!!!!!!!

Answer 1

$5) \frac{3n ^{3} *4m}{8n ^{2}*m ^{3} } = \frac{3n}{2m ^{2} } \\ \\ 6) \\ (a^{n} )^{m} =a ^{nm} \\ a ^{n} a ^{m} =a ^{n+m} \\ \frac{a ^{n} }{a ^{m} } =a ^{n-m}$
Ответ: А3 Б1 В2

$7) \\ 1) (-1) ^{30} -(-1) ^{31} =1-(-1)=1+1=2\\ 2) (-1) ^{30} -(-1) ^{40} =1-1=0 \\ 3) (-1) ^{29} -(-1) ^{30} =-1-1=-2 \\ 4) (-1) ^{40} +(-1) ^{41}=1-1=0$
Ответ: 2,4