Đáp án:
Giải thích các bước giải:
Câu 1:
`47.7.343.7=47.7.7^3 .7=47.7^5`
Câu 2:
`1^2=1`
`1^2=1`
`2^2=4`
`3^2=9`
`4^2=16`
`5^2=25`
`6^2=36`
`7^2=49`
`8^2=64`
`9^2=81`
`10^2=100`
`11^2=121`
`12^2=144`
`13^2=169`
`14^2=196`
`15^2=225`
`16^2=256`
`17^2=289`
`18^2=324`
`19^2=361`
`20^2=400`
Câu 3:
`1^3=1`
`2^3=8`
`3^3=27`
`4^3=64`
`5^3=125`
`6^3=216`
`7^3=343`
`8^3=512`
`9^3=729`
`10^3=1000`