Xin chào mn, em là thành viên mới vô ạ ❤
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- \(\frac{x^3}{8}\) + \(\frac34x^2\) - \(\frac32x\) + 1
= (-\(\frac{x}{2}\))\(^3\) + 3.(-\(\frac{x}{2}\))\(^2\).1 + 3(\(-\frac12\)\(x\) ).1\(^2\) + 1\(^3\)
= (\(\frac{-x}{2}+1\))\(^3\)
\(-\frac{x^3}{8}+\frac34x^2-\frac32x+1\)
\(=\left(-\frac12x\right)^3+3\cdot\left(-\frac12x\right)^2\cdot1+3\cdot\left(-\frac12x\right)\cdot1^2+1^3\)
\(=\left(-\frac12x+1\right)^3\)

1 I usually walk to school.
2 She isn't sleeping now.
3 They was arrive late yesterday.
4 Is he watching TV at the moment?
5 We aren't having class next Monday.
6 My mom cooks dinner every evening.
7 Do you go to the cinema last weeked?
8 Listen! Someone is knocking at the door.
9 I think she pass the test.
10 They don't eat meat on Fridays.

+) The teacher is explaining a new lesson to us.
(–) The teacher is not explaining a new lesson to us.
(?) Is the teacher explaining a new lesson to us?
cho mình tick nhé !
CHÁO BẠN
Dạ anh ơi, anh viết sai chính tả ạ!