Đề toán 2012 - 2013 pot

Same bed, but it feels just a little bit bigger now Our song on the radio, but it don't sound the same When our friends talk about you all that it does is just tear me down Cause my hea

Đề toán(2012-2013)

Bài 1

A=x− y y2 √ x2y2

x2 −2 xy + y 2

a,Rút gọn

A= x− y

y2 √ x2y2

( x− y )2 nếu : x− y ≥ 0

A= x− y

y2

xy

x− y

A= x

y

nếu x− y <0

A= x− y

y2

xy

y −x

A=−(y−x )

y2

xy y−x

A=−x

y

b, tìm giá của A với

x=1 , y=1

nếu x− y ≥ 0

Thay x=1, y=1 vào phương trình ta có

A=1

1≤¿A=¿1

nếu x− y <0

A=−1

1 ≤¿A=−1

x=−1 , y=1

Thay x=−1, y=1 vào phương trình ta có

A=❑

❑

Bài2

chữ số hàng chục của 1 số có 2 chữ số lớn hơn hàng đơn

vị là 1

nếu đổi chỗ 2 chữ số cho nhau sẽ được 1 số =56 số ban đầu Tìm số có hai chữ số đó?

Bài 3 Tìm các số a,b,c,thõa mản:

√a+ √x2−y-2 y =0

Bài 4

Giải phương trình

1, x2+ √x2−y −2 y =0

2,{x2+xy +9 x + y=4

( x +1) (1+ xy )=4

Bài 5 Cho tam giác ABC, về phía ngoài ∆ ABC , tadựngcác giác tam vuông cân ABE và ACE đỉnh A.

1, C/M AI của tam giác ABC vuông góc với EF và AI=12

EI

2, cho(o ) và dây AB,C là 1 điểm bất kì trên cung nhỏ

AB, đường thẳng BC cắt tiếp tuyến tại A cuả tròn ở

D và tia phân giác của góc BAC cắt (o ) tại M Gọi I là trung điểm của AM C/M OI // với phân giác của góc ADB

Same bed, but it feels just a little bit bigger now

Our song on the radio, but it don't sound the same

When our friends talk about you all that it does is just

tear me down

Cause my heart breaks a

little when I hear your name And it all just sound like uh,

uh, uh

Hmmm too young, too dumb

to realize

That I should have bought

you flowers and held your

hand

Should have gave you all my hours when I had the chance Take you to every party

cause all you wanted to do was dance

Now my baby is dancing, but she's dancing with another man.

My pride, my ego, my needs and my selfish ways

Caused a good strong

woman like you to walk out

my life

Now I never, never get to

clean up the mess I made

And it haunts me every time

I close my eyes

It all just sounds like uh, uh,

uh, uh

Too young, too dumb to

That I should have bought you flowers and held your

hand

Should have gave all my

hours when I had the chance Take you to every party

cause all you wanted to do was dance

Now my baby is dancing, but she's dancing with another man.

Although it hurts I'll be the first to say that I was wrong

Oh, I know I'm probably

much too late

To try and apologize for my mistakes

But I just want you to know

I hope he buys you flowers,

I hope he holds your hand

Give you all his hours when

he has the chance

Take you to every party

cause I remember how much

you loved to dance

Do all the things I should

have done when I was your man!

Do all the things I should

have done when I was your man!

I be on my suit and tie shit, tie shit, tie

I be on my suit and tie shit, tie shit

Can I show you a few things?

A few things, a few things, little baby, cause

I be on my suit and tie shit, tie shit

I be on my suit and tie shit, tie shit

Let me show you a few things

Let me show you a few things

[Timbaland] Wait a minute You ready, JT?

[Verse 1: JT]

I can't wait til I get you on the floor, good-looking

Going out so hot, just like an oven

And I'll burn myself but just have to touch it It's so fly and it's all mine

Hey baby, we don't mind all the watching

Cause if they study close, real close

They might learn something

She ain't nothing but a little doozy when she does it

She's so fly tonight

[Hook: JT]

And as long as I've got my suit and tie I'mma leave it all on the floor tonight And you got fixed up to the nines

Let me show you a few things

All pressed up in black and white

And you're dressed in that dress I like Love is swinging in the air tonight

Let me show you a few things

Let me show you a few things

Show you a few things about love

While we’re in the swing of love

Let me show you a few things

Show you a few things about love

Hey

[Verse 2: JT]

Stop: let me get a good look at it

So thick, now I know why they call it a fatty Shit so sick gotta hit and picked up a habit

That's all right, cause you're all mine

Go on and show 'em who you call daddy

I guess they're just mad cause girl, they wish they had it

My killer, my filler, yeah you're a classic

And you're all mine tonight

[Hook]

[JT ] Hey, get out ya seat, Hov

[Verse 3: Jay-Z]

All black at the white shows

White shoes at the black shows

Green card for the Cuban linx

Y'all sit back and enjoy the light show

Nothing exceeds like the sex

?

This is what it's all about

I'm at the ?

Disturbing the guests

Years of distress, tears on the dress

Try to hide her face with some makeup sex This is trouble season

Time for tuxedos for no reason

All saints for my angel

Alexander Wang too

Ass-tight Denim and some Dunks

I'll show you how to do this young!

No papers, catch favors

Get high, out Vegas

Who says these devils ain't looking for trouble

You just got good genes so a nigga tryna cuff you Tell your mother that I love her cause I love you Tell your father we go farther as a couple

They ain't lose a daughter, got a son

As long as you do this hun

Well I woke up to the sound of silence

the cars were cutting like knives in a fist fight

and I found you with a bottle of wine

your head in the curtains

and heart like the Fourth of July

his hun

You swore and said

"We are not

We are not shining stars"

This I know

I never said we are

Though I've never been through hell like that I've closed enough windows

to know you can never look back

If you're lost and alone

Or you're sinking like a stone

Carry on

May your past be the sound

Of your feet upon the ground

Carry on

Carry on, carry on

So I met up with some friends

at the edge of the night

At a bar off 75

And we talked and talked

about how our parents will die

All our neighbours and wives

But I like to think

I can cheat it all

To make up for the times I've been cheated on And it's nice to know

When I was left for dead

I was found and now I don't roam these streets

I am not the ghost you want of me

If you're lost and alone

Or you're sinking like a stone

Carry on

May your past be the sound

Of your feet upon the ground

Carry on

Whoa

My head is on fire

But my legs are fine

After all they are mine

Lay your clothes down on the floor

Close the door

Hold the phone

Show me how

No one’s ever gonna stop us now

Cause we are

We are shining stars

We are invincible

We are who we are

On our darkest day

When we’re miles away

Sun will come

We will find our way home

If you're lost and alone

Or you're sinking like a stone

Carry on

May your past be the sound

Of your feet upon the ground

Carry on

Carry on,carry on o this, hun!