Question 728427
1. 

{{{3f^3f^4=3f^(3+4)=3f^7}}}

2. 

{{{(m^(4n))^5=m^(5*4n)=m^(20n)}}}


3. 

{{{( 8a^2b^-3)^4(3ab^-2)^-4=( 8a^2/b^3)^4/(3a/b^2)^4=( 8^4a^8/b^12)/(3^4a^4/b^8)=( 8^4a^8*b^8)/(b^12*3^4a^4)=(8^4a^cross(8)^4)*cross(b^8)/3^4b^cross(12)^4cross(a^4)=(8a)^4/(3b)^4}}}


4. 

{{{(8^3)* 8^-5=8^3/ 8^5=8^(3-5)=8^-2=1/8^2=1/64}}}

5. 

{{{35m^4/7m^2=cross(35)5m^cross(4)^2/cross(7)cross(m^2)=5m^2}}}