Giúp tui pleaseee
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Lưỡi quốc: cuốc đất, làm cỏ,xới đất,..
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c1 : x luôn lớn hơn không trong phương trình trên nên pt trên vô nghiệm
1) Ta có: \(x-2\sqrt{x}=0\)
\(\Leftrightarrow\sqrt{x}\left(\sqrt{x}-2\right)=0\)
\(\Leftrightarrow\left[{}\begin{matrix}x=0\\x=4\end{matrix}\right.\)
2) Ta có: \(6+\sqrt{x}-x=0\)
\(\Leftrightarrow x-\sqrt{x}-6=0\)
\(\Leftrightarrow\left(\sqrt{x}-3\right)\left(\sqrt{x}+2\right)=0\)
\(\Leftrightarrow\sqrt{x}-3=0\)
\(\Leftrightarrow x=9\)
3) Ta có: \(x+3\sqrt{x}-4=0\)
\(\Leftrightarrow\left(\sqrt{x}+4\right)\left(\sqrt{x}-1\right)=0\)
\(\Leftrightarrow\sqrt{x}-1=0\)
\(\Leftrightarrow x=1\)
đây ko phải văn nghị luận thì tìm lý lẽ bằng chứng làm j hả bạn
mình cũng thấy văn bản này có nghị luận chút thật nhưng ko có dẫn chứng đâu ạ.
Communication is a quick and quick way to convey information from one person to another. There are many ways to communicate. Signing communication is the use of predefined symbols to communicate with each other, it is often used with the hearing impaired and the non-verbal. Next is the way of communicating by means of communication such as computers, telephones, this is usually used on the phone. And the most common way is oral communication. We will talk to each other to transmit information to each other, this is the easiest and fastest way to communicate. There are many ways to practice communication such as speaking with enthusiasm, assertiveness, not talking around, not stuttering, using gesture language "mirroring", asking unknown questions, revealing the name of the other person. . Through the above, you already know the different ways to communicate and how to improve communication skills, hope you can apply them in everyday life.
B - D - A - C
If you are a vegetarian, you won't eat meat.
If you live in a hot country, you won't like cold weather
If you are a teacher, you will have to work very hard
If you do a lot of exercise, you will stay healthy and fit
If you are a mechanic, you will understand engines
If you read newspapers, you will know what is happening in the world
What will you do if it is rainy tomorrow?
1. .....are sitting....are waiting
2....helped...had finished...
3.....did you live.....were...
4...will you do...have
5....didn't Hoa go...
6....ran...
7...didn't drink...
8....is explaining...
9......will help...
10.....will be being...
ĐÂY NHA BẠN !!! CHÚC BẠN HỌC TỐT NHAAA:))