1.George hadn"t been there before.....................                                                     2.Bill hasn"t got a car................................................                                               3.The smiths have got tow cars................................................                                4.She"s got lovely blue eyes..................................... ...........

1 tim x

a.3x(x+2)-(x+2)=0

b.(x-5)²-9x²

^c.x-10x+25=0

phân tích thanh nhân tư

a.x³-6x²+9x

b.a²+b²-zab+a-b

c.4a²+4b²-4a+1

phân tích thanh nhân tu

a.y²-x²-6x-y

b.x+3x+3x+1-(x+1)

  it has been  long time since we last called each other 

we heven't..............................................................................................................

x(x-2)+(2+x)(2-x)

-x(2x+1)-2(x²+x+5)=7

1;you should practice speaking english every day

the teacher  sair.........................................................................................

tôi tham gia rôi