my mother isn't _ _ _.she is thin
giup mk với bạn nào bít chắc chắn nhé mk cần làm
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\(\frac{1}{x}-\frac{1}{y}=\frac{1}{x}.\frac{1}{y}\)
\(=>\frac{y-x}{xy}=\frac{1}{xy}\)
\(=>xy^2-x^2y=xy\)
\(=>xy^2-x^2y-xy=0\)
\(=>x.\left(y^2-xy-y\right)=0\)
\(=>\orbr{\begin{cases}x=0\\y^2-xy-y=0\end{cases}}\)
Ta thấy \(y^2-xy-y=0\)
\(=>y.\left(y-x-y\right)=0\)
\(=>\orbr{\begin{cases}y=0\left(2\right)\\y-y=0\end{cases}}\)
Từ 1 và 2 => x = y = 0
\(\frac{1}{x}-\frac{1}{y}=\frac{1}{x}.\frac{1}{y}\)
\(\Rightarrow\frac{y-x}{xy}=\frac{1}{xy}\)
\(\Rightarrow y-x=1\)
Vậy x,y có dạng \(\hept{\begin{cases}x=y-1\\y=x+1\end{cases}}\)với \(y\ne1;x\ne-1;x\ne0;y\ne0\)
1 . student
2 . family
3 . short
4 . hair
5 . eyes
6 . nose
7 . tall
8 . round
9 . tall
10 . hair
11 . beautiful
1. Student
2. Family
3. Short
4. Hair
5. Eyes
6. Nose
7. Tall
8. Round
9. Tall
10. Hair
11. Beautiful
8x^3 - 8x^2 + 20x^2 - 20x + 26x - 26 =0
<=> 8x^2 ( x-1) + 20x(x-1) + 26(x-1)=0
<=>( 8x^2 + 20x + 26)(x-1)=0
<=> ( x-1)= 0 ( Vì 8x^2 + 20x + 26 >=13,5)
<=> x=1
cho A=2018(225-12)*.....*(225-562)
ta có trong biểu thức A có phép tính là (225-152).Mà 225=152nên
225-152=0=>A=0
1. take => takes
2. more => bỏ
3. more => most
4. take => takes
5. than => as
6. then => than
7. favourite => bỏ
8. not => don't
sai thì thông cảm nha ...
1.My mother often take me to the zoo on Sunday -> takes
2.Mrs. Nga is more taller than her sister -> bỏ
3.Ba is the more intelligent in our class -> most
4.My brother often take she to school -> takes
5.Ba isn't as fat than his brother -> as
6.This exercise is more easy then that one -> than
7.Go shopping is my favourite hobby -> boả
8.Not eat much or you will be obesity -> Don't
1. I am going to have my mother repair my car.
2. Presents are often bought for me by my father on my birthday
3. She is thought to be a robber (bị động đặc biệt)
Good luck^^
Đáp án là;fat
My mother isn't fat. She is thin