B. than

Bị lỗi á. =(((

Thank you

as planned = going to rồi ấy, tớ thấy cho vào hơi thừa, nếu muốn thì bạn cứ viết vào cũng được.

A car is going to be bought.

1. Helen is taller than John.
2. Peter is going to spend his vacation by the sea.
3. You should travel by train.
4. That book is more interesting than this one. 
5. Let's take the bus.

Đồ thị cắt trục tung tại điểm có tung độ bằng -2

$\Rightarrow (0;-2) \in y=ax+b \Rightarrow -2=a.0+b \Rightarrow b=-2$

$\Rightarrow y=ax-2$

Điểm $M(-1;3) \in y=ax-2 \Rightarrow 3=a.(-1)-2 \Rightarrow a=-5$

$\Rightarrow y=-5x-2$

Vậy $a=-5; b=-2$ 

$(a+b)^3+(a-b)^3 \\=(a+b+a-b)[(a+b)^2-(a+b)(a-b)+(a-b)^2] \\=2a(a^2+2ab+b^2-a^2+b^2+a^2-2ab+b^2) \\= 2a(a^2+3b^2)$

1. however
2. predict
3. between
4. learn
5. think
.
1. wear
2. in
3. However
4. has
5. wash