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a)=7*7^(1/4)=7^(1+1/4)=7^5/4
b)=3^2*3^3/2=3^(2+3/2)=3^7/2
2.
6^(2/3)*6^(3/2)*6^(-1/6)*6^((√5-2)(√5+2))=
6^(2/3+3/2-1/6+1)=6^3=216
7^(1)*7^(-1/3)*7^(-1/2)*7^(√5+5)*7^(-√5-2)=
7^(1-1/3-1/2)*7^(√5+5-√5-2)=7^(1/6)*7^(3)=343*√(∛7)
Na końcu jest pierwiastek 6stopnia z 7