lằng nhằng ,rối mắt lắm

Giải:

a) \(4^2.8^5=\left(2^2\right)^2.\left(2^3\right)^5=2^4.2^{15}=2^{19}\)

b) \(27^3.9^4=\left(3^3\right)^3.\left(3^2\right)^4=3^9.3^8=3^{17}\)

c) \(64^3.16^7=\left(4^3\right)^3.\left(4^2\right)^7=4^9.4^{14}=4^{23}\)

8^9 : 2^3

= (2^3)^9 : 2^3

= 2^27 : 2^3

= 2^24

VIET KET QUA SAU DUOI DANG LUY THUA CUA 1 SO TU NHIEN

8^9:2^3

trả lời :

8⁹ : 2³

= ( 2³ ) ⁹ : 2³

= 2^{3 . 9} : 2³

= 2²⁷ : 2³

= 2^{27 - 3}

= 2²⁴

= a*3 đó bạn

a^3

mk cũng ko biết có đúng ko

a^4:a=a^3 k mình

​

\(32^9:64=\left(2^5\right)^9:2^6=2^{45}:2^6=2^{45-6}=2^{39}\)

32⁹:64

= (2⁵)⁹:2⁶

= 2⁴⁵:2⁶

= 2^45-6

= 2³⁹

\(9^5:3^7=\left(3^2\right)^5:3^7=3^{10}:3^7=3^3\)

\(8^6:4^8=\left(2^3\right)^6:\left(2^2\right)^8=2^{18}:2^{16}=2^2\)

\(25^7:125^3=\left(5^2\right)^7:\left(5^3\right)^3=5^{14}:5^9=5^5\)

Chúc bạn học tốt !

(ab) x (ab)²

= (ab)¹ x (ab)²

= (ab)¹⁺²

=(ab)³

hok tốt..........

ab . (ab)² = (ab)²⁺¹ = (ab)³

(ab)³