Question

[bé bảo]

viết gọn các tích sau bằng cách dùng lũy thừa 

a, 2.2.10.10.5

b,3.5.27.125

c,2.3.12.12.3

d,2.3.8.12.24

Answer 1

[Vĩnh Thụy]

a, 2.2.10.10.5 = 2.(2.5).10.10 = 2.10.10.10 = 2.10^3

b, 3.5.27.125 = 3.5.3^3.5^3 = 3^4.5^4

c, 2.3.12.12.3 = 2.3.3.2^2.3.2^2.3 = 2^5.3^4 

d, 2.3.8.12.24 = 2.3.2^3.3.2^2.2^3.3 = 2^9.3^3

Answer 2

[Đuc Kim Phan]

A)2.2.10.10.5=2.(2.5).10.10

=2.10.10.10=2¹.10³

B) 3.5.27.125=3.5.(9.3).(25.5)

=3.5.3.3.3.5.5.5=3.3.3.3.5.5.5.5=3⁴.5⁴

C) 2.3.12.12.3=2.3.(4.3).(4.3).3

=2.3.2.2.3.2.2.3.3=2.2.2.2.2.3.3.3.3=2⁵.3⁴

Đ)2.3.8.12.24=2.3.(2.2).(3.4).(6.2)

=2.3.2.2.3.2.2.3.2.2=2⁷.3³