Question

Viết các tích sau dưới dạng lũy thừa: 

a)\(5.5.5.5\)  ;  b)\(9.9.9.9.9.9.9\)   ;  c)\(7.7.7.7.7\)   ;   d)\(a.a.a.a.a.a.a.a\)

Answer 1

\(a,5\cdot5\cdot5\cdot5=5^4\\b,9\cdot9\cdot9\cdot9\cdot9\cdot9\cdot9=9^7\\c,7\cdot7\cdot7\cdot7\cdot7=7^5\\d,a\cdot a\cdot a\cdot a\cdot a\cdot a\cdot a\cdot a=a^8\)

Answer 2

a/ 5⁴

b/9⁷

c/7⁵

d/a⁸

Answer 3

\(a\))\(5.5.5.5=5^4\) 

\(b\))\(9.9.9.9.9.9.9=9^7\) 

\(c\))\(7.7.7.7.7=7^5\)

\(d\))\(a.a.a.a.a.a.a.a=a^8\)

Answer 4

a) 5.5.5.5 = 5⁴

b) 9.9.9.9.9.9.9 = 9⁷

c) 7.7.7.7.7 = 7⁵

d) a.a.a.a.a.a.a.a = a⁸