Potensregning 1: Spor II – fasit

SPOR II

Oppgave 1
a) 8^4\cdot8^2=8^6 b) 13^2\cdot13^4=13^6 c) 16^3\cdot16^7=16^{10}
d) 4^2\cdot4^4\cdot4^4=4^{10} e) 5^4\cdot5\cdot5^2=5^7 f) 10^0\cdot10^2=10^2
Oppgave 2
a) 8^7:8^5=8^2 b) 12^5:12^2=12^3 c) 6^7:6=6^6
d) 11^5:11^2:11=11^2 e) 2^2:2=2^1=2 f) 10^4:10^5=10^{-1}
Oppgave 3
a) 4^3+6^2=64+36=100 b) 5^2+10^2=25+100=125 c) 5^3+5^2=125+25=150
d) 3^4+3^2=81+9=90 e) 1^2+2^2+3^2=1+4+9=14 f) 1^2+2^3+3^4=1+8+81=90
Oppgave 4
a) 9^2-6^2=81-36=45 b) 4^3-5^2=64-25=39 c) 5^3-5^2=125-25=100
d) 10^2-9^2=100-81=19 e) 8^2-4^3-2^3=64-64-8=-8 f) 7^2-6^2-5^2=49-36-25=-12
 

 

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