Question

[Đoàn Thị Thanh Thư]

viet cac so sau duoi dang luy thua cua 1 so:

\(a)-\frac{8}{27}\)

\(b)\frac{81}{625}\)

viet cac tich sau duoi dang luy thua cua 1 so:

\(a)27.81\)

\(b)\frac{2}{5}.\frac{8}{125}.\frac{16}{625}\)

Answer 1

[Thi Phạm Khánh]

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