Question

[võ ngọc kim ngân]

viết các tích sau dưới dạng một lũy thừa
a) 100000.100.10.10
b) 12.12.12.6
c) 25.5.4.2.10
d) 210.10.3.5.10

Answer 1

[Nguyễn Đức Trí]

a) \(...=10^5.10^2.10^2=10^9\)

b) \(...=\left(2^2.3\right).\left(2^2.3\right).\left(2^2.3\right).2.3=2^7.3^4\)

c) \(...=5^2.5.2^2.2.2.5=2^4.5^4\)

d) \(...=7.3.2.5.2.5.3.5.2.5=2^33^2.5^4.7\)

Answer 2

[Nguyễn Ngọc Anh Minh]

a/

\(100000.100.10.10=10^5.10^2.10.10=10^9=2^9.5^9\)

b/

\(12.12.12.6=2^2.3.2^2.3.2^2.3.2.3=2^7.3^4\)

c/

\(25.5.4.2.10=5^2.5.2^2.2.2.5=2^4.5^4\)

d/

\(210.10.3.5.10=21.10.10.3.5.10=3.7.2.5.2.5.3.5.2.5=2^3.3^2.5^4.7\)