b) $8^{13}$ : $4^{10}$
= ($2^{3}$)$^{13}$ : ($2^{2}$)$^{10}$
= $2^{39}$ : $2^{20}$
= $2^{19}$
c) $7^{12}$ . $27^{4}$
= $7^{12}$ . ($3^{3}$)$^{4}$
= $7^{12}$ . $3^{12}$
= (7.3)$^{12}$
= $21^{12}$
#NOCOPY
XIN CÂU TRẢ LỜI HAY NHẤT NHÉ BẠN 😁😁😁😁😁
`@Kem`
Giải thích các bước giải:
`b, 8^13 ÷ 4^10`
`= (8^13)/(4^10)`
`= ((2³)^13)/((2²)^10)`
`= (2^39)/(2^20)`
`= 2^19`
`c. 7^12 . 27^4`
`= 7^12 . (3^3)^4`
`= 7^12 . 3^12`
`= (3.7)^12`
`= 21^12`
Mong mn giúp e ,em cảm ơn mn rất nhiều
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Giúp mình làm bài văn này nha. Mình đang thi nên cần gấp. Mn có thể copy nhưng phải đủ ý
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