Bài 1:
d) `(4^2)^3×(4^3)^5`
`=4^6×4^15`
`=4^21`
e) `10^5×(10^2)^5×(10^3)^2`
`= 10^5×10^10×10^6`
`=10^21`
Bài 2:
c) `(5^2)^9÷(5^3)^5`
`=5^18÷5^15`
`=5^3`
d)`(4^2)^5÷4^6÷(4^2×2^2)`
`= 4^10÷4^6÷4^3`
`= 4`
( Tui không chép lại đề đâu nhé)
Đáp án:
` 1.d`
`16^3 . 64^5=(4^2)^3.(4^3)^5=4^6 . 4^15=4^21`
`1.e`
`10^5 . 100^5 . 1000^2=10^5 . (10^2)^5 . (10^3)^2 =10^5 . 10^10 . 10^6=10^21 `
`2.c`
`25^9 : 125^5=(5^2)^9 : (5^3)^5=5^18:5^15=5^3`
`2.d`
`16^5:4^6:8^2=(4^2)^5:4^6:4^2 . 2^2=4^10:4^6:4^2 .4=4^2 .4=4^3`
`text{ xin hay nhất}`
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1. Viết kết quả về dạng lũy thừa : a, $16^{3}. $64^{5}$ b, $10^{5} . $100^{5}. $1000^{2}$ 2. Tính : a, $25^{9} : $125^{5}$ b, $16^{5} : $4^{6} : $8^{2}$
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