10 mu 5 x 100mu 4 viet thanhf lũy thừa 3 mu 7x 6 mu 4 viet thanhf lũy thừa 4x10 mu 3 x 4mu 5 x 15 mũ 5 x 81 viet thanhf lũy thừa

Đáp án:

 $10^5.100^4$

$= 10^5.10^8$

$=10^{5+8}$

$=10^{13}$

$3^7.6^4$

$= 3^7.3^4.2^4$

$= 3^{11}.2^4$

$4.10^3.4^5.15^5.81$

$= 4^6.5^3.2^3.5^5.3.3^4.3^4$

 $= 4^6.5^8.2^3.3^9$