1.
a) \(-\frac{8}{27}=-\left(\frac{2}{3}\right)^3\)
b) \(\frac{81}{625}=\left(\frac{3}{5}\right)^4\)
2.
a) 27.81=2187=37
b) sai đề
Các câu hỏi tương tự
viet cac bieu thuc sau duoi dang luy thua cua mot so huu ti
â)\(25.5^3.\frac{1}{625}.5^2\)
b)\(4.32:\left(2^3.\frac{1}{16}\right)\)
c)\(5^2.3^5.\left(\frac{3}{5}\right)^2\)
d)\(\left(\frac{1}{7}\right)^2.\frac{1}{7}.49^2\)
Viet cac so (0,25)^8 va (0,125)^4 duoi dang cac luy thua cua co so 0 ,5
1) Viet cac so 2 mu 27 va 3 mu 18 duoi dang luy thua co so mu la9
viet cac so 2mu27 va 3mu18 duoi dang cac luy thua co so mu la 9
viet moi so sau voi dang so luy thua 81/125 va -8/27 xin cam on
Viet cac tich sau duoi dang luy thua:
a) \(4^{20}\)x \(8^{10}\)
b) \(81^{10}\)x \(27^8\)
c) \(a^{12}:a^8\)
viet duoi dang luy thua co so 10 cua 256.84 la
A 108
B 1012
C 1010
Viết cac số (0,25)2 va (0,125)4 duoi dang luy thua cua cac co so 0,5
Viet tich sau duoi dang luy thua
2/3×4/9×8/27
Ghi cach giai ra gium minh voi