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Bạn sang môn Toán hỏi nha.Vì đây là câu dễ nên mình trả lời luôn cho
\(x^3+2x^2y-x-2y\)
\(=\left(x^3-x\right)+\left(2x^2y-2y\right)\)
\(=x\left(x^2-1\right)+2y\left(x^2-1\right)\)
\(=\left(x^2-1\right)\left(x+2y\right)\)
\(=\left(x-1\right)\left(x+1\right)\left(x+2y\right)\)
1.He/ often/ have/ breakfast/ late.
He often has breakfast late.
2.You/ do/ the housework/ at the moment?
Are you doing the housework at the moment?
3.I/ not/ go/ to school/ on weekends.
I don't go to school on weekends.
4.John’s girlfriend/ wear/ a red T-shirt/ now.
John's girlfriend is wearing a red T-shirt now.
5.They/ like/ beer or wine?
Do they like beer or wine?
6.What/ he/ usually/ do/ at night?
What does he usually do at night?
7.The teacher/ never/ lose/ his temper.
The teacher never loses his temper.
8.Why/ you/ listen/ to music/ loudly now?
Why are you listening to music loudly now?
1.He/ often/ have/ breakfast/ late.
He often has breakfast late.
2.You/ do/ the housework/ at the moment?
Are you doing the housework at the moment?
3.I/ not/ go/ to school/ on weekends.
I don't go to school on weekends.
4.John’s girlfriend/ wear/ a red T-shirt/ now.
John's girlfriend is wearing a red T-shirt now.
5.They/ like/ beer or wine?
Do they like beer or wine?
6.What/ he/ usually/ do/ at night?
What does he usually do at night?
7.The teacher/ never/ lose/ his temper.
The teacher never loses his temper.
8.Why/ you/ listen/ to music/ loudly now?
Why are you listening to music loudly now?