We (see) are going to see a movie tomorrow . Will you (join) join ?

Tomorrow 2 chữ r thôi nha bạn

juicy

Biến đổi vế trái ta có :

    \(\frac{1}{a\left(a+1\right)}-\frac{1}{\left(a+1\right)\left(a+2\right)}=\frac{1}{a}-\frac{1}{a+1}-\left(\frac{1}{a+1}-\frac{1}{a+2}\right)=\frac{1}{a}-\frac{1}{a+1}-\frac{1}{a+1}+\frac{1}{a+2}\)

  \(\frac{1}{a}-\frac{2}{a+1}+\frac{1}{a+2}=\frac{\left(a+1\right)\left(a+2\right)-2a\left(a+2\right)+a\left(a+1\right)}{a\left(a+1\right)\left(a+2\right)}\)

 \(=\frac{a^2+3a+2-2a^2-4a+a^2+a}{a\left(a+1\right)\left(a+2\right)}=\frac{2}{a\left(a+1\right)\left(a+2\right)}\)

Vậy Vế trái = Vế phải 

Remember often to keep in touch with me.

a) Tam giác ABO=CDO ; Tam giác BCO=ADO

b) OA=OC

OB=OD

student should work hard to make thier parent happy.

Choose the underlined part is pronounced differently from of the others.

A.math

B.month

C.both

D.with

Chữ cái in hoa đậm là đáp án mình chọn đó nha các bạn!!!

A

A typical learning day for Chau begins at 7 o'clock every morning.

Davis wants to walk to work instead of going by car as usual.