làm bài thơ về đơn chất đồng

giúp mik với các bạn

12x – 0,5.(x – 1) = 0,5

tính

\(15^8.2^4\)

\(27^5:32^3\)

1.He's prerending ............. (be) angry

2. I can't help ..............(feel) neverous

Tính

a)\(\dfrac{9^8.5^6}{3^7.27^3.25^4}\)

b)\(\dfrac{5^{20}.6^{18}}{15^{20}.4^{10}}\)

c)\(\left(\dfrac{1}{3}\right)^{50}.9^{25}-\left(\dfrac{2}{3}\right)^{100}:\left(\dfrac{8}{27}\right)^{33}\)

1. They have run out of paper for the photocopier. Leef

-> There isn't ................................................. for the photocopier

2. I will only work extra hours if I paid at a higher rate. UNLESS

-> I will................................... I get paid at a heigher rate