refer

1] l/wash/my hair.=> I am washing my hair

2] lt/snow =>it is snowing

3] they / sit/on the bench=>they are sitting on the beach

4]lt/rain/very hard =>it is raining very hard

5] she/learn/English=> she is leaning E

6]he/listen/to the radio=> He is listening to the radio

7] we/speak/in the claas=>We are speaking in the class

8]l/read/a newspaper=> i am reading a newspaper

9]you/watch/T.V=>Are u watching tv

10]what/sam and annne/ do ?=> What are Sam and Anne doing?

11]what /you/ do ?What are u doing?

12]lt/rain/? =>it is raining

13]that clock/work=>that clock is working

14]lan / write/a letter=> lan is writting a letter

15] why/ you/run?=> Why are u running?

1. I/wash/my/hair. => ...........I am washing my hair..........................................................................................

2. It/snow.               => ..........It is snowing............................................................................................

3. They/sit/on/the/bench. => .............They are sitting on the bench...............................................................................

4. It/rain/very/hard.       => ...............it is raining very hard...............................................................................

5. She/learn/English.     => .........................She is learning E.........................................................................

6. He/listen/to/the/radio. => .........................He is listaning to the radio.........................................................................

7. We/smoke/in/the/class. => ............we are smoking in the class................................................................................

8. I/read/a/newspaper.         . => ............................ I am reading a newspaper................................................................

9. You/watch/T.V?                => ...............Are you watching TV.............................................................................

10. What/you/do?                 => ..................What are you doing..........................................................................

11. What/Sam/and/Anne/do?   => ..................What are Sam and Anne doing..........................................................................

12. It/rain/?                              => ................Is it raining............................................................................

13. That/clock/work?             => ...................Is tha clock working.........................................................................

14. You/write/a/letter.          => ...........Are you writing a letter.................................................................................

15. Why/you/run/?              => ...........Why are you running.................................................................................

1] l/wash/my hair.=> I am washing my hair

2] lt/snow =>it is snowing

3] they / sit/on the bench=>they are sitting on the beach

4]lt/rain/very hard =>it is raining very hard

5] she/learn/English=> she is leaning E

6]he/listen/to the radio=> He is listening to the radio

7] we/speak/in the claas=>We are speaking in the class

8]l/read/a newspaper=> i am reading a newspaper

9]you/watch/T.V=>Are u watching tv

10]what/sam and annne/ do ?=> What are Sam and Anne doing?

11]what /you/ do ?What are u doing?

12]lt/rain/? =>it is raining

13]that clock/work=>that clock is working

14]lan / write/a letter=> lan is writting a letter

15] why/ you/run?=> Why are u running?

i/wash/hair ---->......I am washing my hair...........

it/snow --->.....It is snowing........

they/sit /on the bench ----->........They are sitting on the beach..........

it/rain/very hard -->......It is raining very hard .........

she/learn/english--->.......She is learning English.........

my hair is dirty .i wash it

động từ giữ nguyên không chia  

wash

lộn washed

has washed

Chỉ hành động trong quá khứ nhưng vẫn có ảnh hưởng đến hiện tại

dài thế sao làm đc

Trường bn gắt quá

\(=5x^2-10x+5+10x^2-10x=5\left(x^2-2x+1\right)+10x\left(x-1\right)\)

\(=5\left(x-1\right)^2+10x\left(x-1\right)=\left(x-1\right)\left(5\left(x-1\right)+10x\right)\)

\(=\left(x-1\right)\left(5x-5+10x\right)=\left(x-1\right)\left(15x-5\right)=0\)

\(\Rightarrow x-1=0\Rightarrow x=1\)

    \(15x-5=0\Rightarrow15x=5\Rightarrow x=\frac{5}{15}=\frac{1}{3}\)

vậy 1 và 1/3 là nghiệm của 15x^2-20x+5