Giúp e gấp gấp ạ
Giúp e exercise 2 với ạ e cần gấp ạ Giúp e exercise 2 với ạ e cần gấp ạ
Giúp e ạ gấp gấp ạ
Gấp gấp ai giúp e vs ạ,mong là hay và cảm động ạ,e cảm ơn trước ạ
giúp e vs ạ e đang cần gấp e xin mng e cần gấp nên mng làm giúp e vs
g: \(=\dfrac{x^2+2x-x^2-4x-2x+4}{x\left(x-2\right)\left(x+2\right)}=\dfrac{-4x+4}{x\left(x-2\right)\left(x+2\right)}\)
h: \(=\dfrac{2x^2+1-x^2+1-x^2+x-1}{\left(x+1\right)\left(x^2-x+1\right)}\)
\(=\dfrac{x+1}{\left(x+1\right)\left(x^2-x+1\right)}=\dfrac{1}{x^2-x+1}\)
\(e,=\dfrac{1}{x-1}-\dfrac{2x}{\left(x^2+1\right)\left(x-1\right)}=\dfrac{x^2-2x+1}{\left(x^2+1\right)\left(x-1\right)}=\dfrac{\left(x-1\right)^2}{\left(x^2+1\right)\left(x-1\right)}=\dfrac{x-1}{x^2+1}\\ f,=\dfrac{3x-1}{2\left(3x+1\right)}+\dfrac{3x+1}{2\left(3x-1\right)}-\dfrac{6x}{\left(3x-1\right)\left(3x+1\right)}\\ =\dfrac{9x^2-6x+1+9x^2+6x+1-12x}{2\left(3x-1\right)\left(3x+1\right)}=\dfrac{2\left(3x-1\right)^2}{2\left(3x-1\right)\left(3x+1\right)}=\dfrac{3x-1}{3x+1}\)
\(g,=\dfrac{x}{x\left(x-2\right)}-\dfrac{x^2+4x}{x\left(x-2\right)\left(x+2\right)}-\dfrac{2}{x\left(x+2\right)}\\ =\dfrac{x^2+2x-x^2-4x-2x+4}{x\left(x-2\right)\left(x+2\right)}=\dfrac{-4x+4}{x\left(x-2\right)\left(x+2\right)}\\ h,=\dfrac{2x^2+1-x^2+1-x^2+x-1}{\left(x+1\right)\left(x^2-x+1\right)}=\dfrac{x+1}{\left(x+1\right)\left(x^2-x+1\right)}=\dfrac{1}{x^2-x+1}\)
Mong mọi người giúp e gấp ạ, e đang cần gấp
a, Ta có phương trình cân bằng nhiệt
\(Q_{toả}=Q_{thu}\\ \Leftrightarrow2.380\left(150-t_{cb}\right)=1,5.4200\left(t_{cb}-30\right)\\ \Rightarrow t_{cb}=42,91^o\)
b, Theo đề bài ta đc
( đoạn này mik chưa hiểu đề lắm nói rõ ra đc ko bạn )
Giúp e ạ e cần gấp ạ
Giúp e ạ e cần gấp ạ
1. That is the nicest thing you have ever said
2. That is the most exciting film I have ever seen
3. This is the most unreliable car they have ever bought
4. He's the funniest man she has ever worked with
5. That is the most expensive present he has ever received
6. That is the best meal I have ever had
1, That is the nicest thing you have ever said.
2, That is the most exciting film I have ever seen.
3, This is the most unreliable car they have ever bought.
4, He is the funniest man she has ever worked with.
5, That is the most expensive present he has ever received.
6, That is the best meal I have ever had.
gấp mn giúp em câu này vs ạ e gấp lắm mn giúp em vs em cảm ơn ạ
Giúp e bài 2 thôi ạ bài 1 e làm r ạ! Mong mn giúp e, e cần gấp ạ!