Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Bạn sang môn Toán hỏi nha.Vì đây là câu dễ nên mình trả lời luôn cho
\(x^3+2x^2y-x-2y\)
\(=\left(x^3-x\right)+\left(2x^2y-2y\right)\)
\(=x\left(x^2-1\right)+2y\left(x^2-1\right)\)
\(=\left(x^2-1\right)\left(x+2y\right)\)
\(=\left(x-1\right)\left(x+1\right)\left(x+2y\right)\)
`3/8 xx (-5)/7 + (-5/7) xx 5/8`
`= -5/7 xx (3/8+5/8)`
`=-5/7 xx 8/8`
`=-5/7 xx 1`
`=-5/7`
có vẻ hơi sai lớp vs môn nhỉ:<
\(\dfrac{3}{8}.\dfrac{-5}{7}+\left(\dfrac{-5}{7}\right).\dfrac{5}{8}=\dfrac{-5}{7}.\left(\dfrac{3}{8}+\dfrac{5}{8}\right)=\dfrac{-5}{7}.1=\dfrac{-5}{7}\)
Viết câu cùng nghĩa:
1. The science books are on the shelves on the right. They are very interesting.
=) The science books on the shelves ________on the right arre very interesting.____________
2. The girl is on the right corner of the room. She is Mai.
=) The girl on _________the right corner off the room is mai_________________.
Dùng từ gợi ý, viết thành câu hoàn chỉnh:
1. Literature/ I/ read/ books/ write/ what/ I/ read
i read literature books and write what i read.
2. These racks/ left/ magazines/ and/ those racks/ right/ newspapers.
these racks on the left have magazines and thoses rack on the right have newspapers.
3. Where/ I/ find/ reference books/ readers?
where can i find many kinds of books : readers, referance books ?
1. Should I have a chance to go back to the past, I will do the right and meaningful things
2. Were Mary to give in to the argument, she would have left a good impression on her bosss heart
Đăng bài sai môn rồi bạn ơi, đăng qua môn toán nhé
nhầm :>