a)(rad5)^35·(rad5)^-33=rad5^2=5
b)(rad5)^-10·(rad5)^8=rad5^-2=5
c)(rad11)-7·(rad121)^8=rad11^-7·(rad11^2)^8=rad11^-7·(rad11)^16=rad11^9=rad11^8·rad^1=11^4rad11
d)(rad5/rad14·rad7)^-20=5^-10/14^-10·7^-10
e)(rad2)^-15·rad2^4:rad2^-9=rad2^14·rad2·2^2:rad2^-8·rad2=(2^7rad2)·4·2^-4rad2=(2^7rad2)·8^-4rad2=(2^7rad2)·2^-12rad2=4^-5rad4=4^-5·2
