-4x²(x-7)+4x(x²-5)=28x²-13

a, (4x+1)(x-3)-(x-7)(4x-1)=15

b, (x+1)(x²-x+1)-x(x²-3)=4

c, (x-3)(x²+3x+9)+x(5-x²)=6x

d, (5x-1)(5x+1)=25x²-7x+15

a, (x-1)(x+2)-(x+5)(x-2)

b, (2x-2)(x+4)+(-x+1)(x-2)

c,(-x+5)(x+3)+(2x-1)(x+3)

d, (x+3)(x-1)-(x-7)(x-6)

Giúp tớ với ạaa

1.A

2.A

3.C

4.D

5.B

3.How long do you stay in Germany?

4.What do they do during the holidays?

5.Wil he get married next year?

6.When does she takes her exams?

7.Wil we have lunch in a pub?

8.Will you visit your family soon?

9.How do they travel to Prague?

10.Does she look for a new job?

11.Why do they sell their house?

12.Wil your parents retire next year?