And they have really good mango ice-cream there.

Để \(\frac{2a+5}{a+1}\)nguyên thì

2a+5 chia hết cho a+1

=> 2a+2+3 chia hết cho a+1

Vì 2a+2 chia hết cho a+1

=> 3 cha hết cho a+1

=> a+1 thuộc Ư(3)

=> a+1 thuộc {-3; -1; 1; 3}

=> a thuộc {-4; -2; 0; 2}

He's always eating something.

How much homework do we have ?

Don't talk too much in class.

Does your mother need anything else ?

She is going to park.

a, x = 9.

b, x = 2.

tick nha mình đầu tiên.

a, 9,8-5,4-1,2=4,4-1,2=3,2
9,8-(5,4+1,2)=9,8-6,6=3,2
b,26,38-7,5-3,16=18,88-3,16=15,72
 26,38-(7,5+3,16)=26,38-10,66=15,72
c,37,86-9.2-4,8=28,66-4,8=23,86
37,86-(9,2+4,8)=37,86-14=23,86
 

Mình làm rồi.