ko bit

cái này là tuỳ theo mùa bạn nhé.

Lời giải:

a. 

$Q(x)=(3x^4+x^3+2x^2+x+1)-P(x)=(3x^4+x^3+2x^2+x+1)-(2x^4-x^2+x-2)$

$=3x^4+x^3+2x^2+x+1-2x^4+x^2-x+2$

$=x^4+x^3+3x^2+3$

b.

$H(x)=P(x)-(x^4-x^3+x^2-2)=(2x^4-x^2+x-2)-(x^4-x^3+x^2-2)$

$=2x^4-x^2+x-2-x^4+x^3-x^2+2$

$=x^4+x^3-2x^2+x$

1 D

6 A

\(\dfrac{x}{y}=\dfrac{6}{5}\Leftrightarrow\dfrac{x}{6}=\dfrac{y}{5}\)

\(\dfrac{x+y}{6+5}=\dfrac{22}{11}=2\)

\(\dfrac{x}{6}=2\Rightarrow x=12\\ \dfrac{y}{5}=2\Rightarrow y=10\)

\(\dfrac{x}{y}=\dfrac{6}{5}\)

\(=>\dfrac{x}{6}=\dfrac{y}{5}\)

\(=>\dfrac{x+y}{6+5}=\dfrac{22}{11}=2\)

\(=>\dfrac{x}{6}=2=>x=12\)

\(=>\dfrac{y}{5}=2=>y=10\)

Vậy \(\left(x;y\right)=\left(12;10\right)\)

1.small white Korean
2.lovely long red 
3.pretty oval white
4.beautiful large wooden
5.beautiful long black
 

1. My colleague has a (white/ Korean/ small) __small white Korean___________ car.

2. Mrs. Navy likes wearing a (red/ long/ lovely) __lovely long red______ dress on special occasions.

3. She has a (pretty/ happy/ oval) _____pretty happy oval___ face, so she is quite beautiful.

4. In the kitchen is a (large/ wooden/ beautiful) __beautiful large wooden______ table.

5. Mrs. Annie looks so graceful because she has (black/ long/ beautiful) _____beautiful long black___ hair.

Câu tục ngữ ở bài nào hả bạn?

câu  tục ngữ và sáng tác văn chương.

 nha bạn

I don't know

mà có bị thật hả?

ừ tôi bị suốt lun

ko nhá