Câu D

1) 

2) 

3) 

4) 

2b)=(x−2y)(x+2y)−2(x−2y)=(x−2y)(x+2y−2)

mik giúp r nhé

3)a,⇒x2−x−2=x2⇒x=−2b,⇒x(x−3)−4(x−3)=0⇒(x−4)(x−3)=0⇒[x=3x=4c,⇒x(2x−1)2=0⇒⎡⎣x=0x=12d,⇒x3−x2+4x2−4x+7x−7=0⇒(x−1)(x2+4x+7)=0⇒[x=1(x+2)2+3=0(vô.lí)⇒x=1

bạn ghi ra rõ đc k mik nhìn hơi khó

27wrote

28 got

29 is going to get

30 came

31 will call - arrive

32 saw - has lost - grown

33 is knocking - will open

34 think - is knocking

bạn cần câu mấy

dài quá mình giúp ko nổi sorry nhá!

=25y2+6xy+10x²/10x²y³

1Firstly

2 Secondly

3 Thirdly

4 Moreove

5 For these reasons