Lỗi

C

1. When was Nam’s birthday party?

=> It was (on) last Sunday.

2. Who went to Nam’s birthday party?

=>Nam’s classmates went to his birthday party.

3. What did Phong do at the party?

=>He played the guitar.

4. What did Linda do at the Party?

=>She played the piano.

Để hai đường thẳng cắt nhau thì m-2<>2

hay m<>4

a = - 16

b = - 2, 72

x=1 => y=1

x=0 =>y=-1

C

0,798 tấn