cho đa thức f(x) = x3 +ax2+bx-2
Xác định hệ số a,b biết đa thức có 2 nghiệm x1= -1; x2 = 1
Giải giúp mình với! Mình đang cần gấp !!!!!!! :3
1.What does a 'balanced diet' mean? ( Answer the question)
A balanced diet is a diet that contains differing kinds of foods in certain quantities and proportions so that the requirement for calories, proteins, minerals, vitamins and alternative nutrients is adequate and a small provision is reserved for additional nutrients to endure the short length of leanness
2. He / slow/ careful/ driver / than/ I/ ./ (Write the whole sentences)
He is a slower and more careful driver than I am
3. What's the ( thick) of this book? ( Supply the correct form of the word in the bracket)
thickness
4. Is there any ( good) in cucumber? (Supply the correct form of the word in the bracket
goodness
5. She was an active participant in social activities. ( Rewrite the following sentences)
She participated actively in social activities
6. They were born in 1999 and so was he. ( Correct only one mistake)
was => is
7. Until recently, man couldn't fly highly. ( Correct only one mistake)
highly => high
8. Minh prefers the detective film to anything else. ( Make the question)
What does he prefer detective film to?
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Oxit bazo :
CuO : Đồng II oxit
Oxit axit :
SO3 : Lưu huỳnh trioxit
P2O5 : Điphotpho pentaooxit
Axit :
HCl : Axit clohidric
HClO4 : Axit pecloric
Bazo :
Fe(OH)3 : Sắt III hidroxit
Muối :
Ba(NO3)2 : Bari nitrat
ZnS : Kẽm sunfua
NaH2PO4 : Natri đihidrophophat
Mg3(PO4)2 : Magie photphat
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