Question

((m-n)^6除(n-m)^8))乘(m-n)^3 ((ab)^4乘(ab)^5除(ab)^7))^3

Answer 1

[(m-n)^6/(n-m)^8)]*(m-n)^3

=(m-n)^6*(m-n)^3/(m-n)^8)

=(m-n)^(6+3-8)

=m-n

[(ab)^4*(ab)^5/(ab)^7]^3

=[(ab)^(4+5-7)]^3

=[(ab)^2]^3

=(ab)^6

=a^6b^6