Tính tổng của các dãy số sau:

1 + 2 + 3 + 4 + 5 + .....+ 98 + 99 + 100

Choose the word whose underlined part has a different pronunciation from the others in each group

A. difficult

B. commune

C. running

D. suffer

Choose the word whose underlined part has a different pronunciation from the others in each group

A. provide

B. primary

C. sign

D. province

10 chia het cho a

12 chia het cho a

14 cung chia hết cho a

suy ra a=2 rồi thay a vào

Sửa đề : \(x^2-2xy+y^2-z^2\)

\(=\left(x-y\right)^2-z^2\)

\(=\left(x-y-z\right)\left(x-y+z\right)\)

Câu 1: Ta có

\(\dfrac{4^{1008}}{5^{2016}}=\dfrac{\left(2^2\right)^{1008}}{5^{2016}}=\dfrac{2^{2016}}{5^{2016}}\)

\(\dfrac{16^{504}.3^{2016}}{5^{2016}.4^{1008}}=\dfrac{\left(2^4\right)^{504}.3^{2016}}{5^{2016}.\left(2^2\right)^{1008}}=\dfrac{2^{2016}.3^{2016}}{5^{2016}.2^{2016}}=\dfrac{3^{2016}}{5^{2016}}\)

\(\Rightarrow\dfrac{2^{2016}}{5^{2016}}< \dfrac{3^{2016}}{5^{2016}}\)

Vậy.....