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natik2005
31.10.2020 06:24
Алгебра
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Раскройте скобки в Present Perfect, Past Perfect, Future Perfect. Обратите внимание на залог (Active/Passive Voice).
1 You … ( to be ) to London?
2 Mary never … ( to try ) Chinese food.
3 Disneyland already … ( to visit ) by Mark and Lucy?
4 When Mrs Smith came home the dinner already … (to cook ).
5 Robbers … ( to catch ) in 5 hours after robbery.
6 The Police is sure robbers … ( to catch ) by the midnight.
7 The present … ( to open ) by the end of the party?
8 The report … ( to finish ) by 6 p.m. tomorrow?
9 A new car … ( not to buy ) yet.
10 Mark already … ( to read ) this book.

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Боня301205
Боня301205
4,8(13 оценок)
X² +18x-19=0 d=18² -4*(-19)=324+76=400 x₁=(-18-20)/2=-19 x₂=(-18+20)/2=1 ответ: -19;   1.

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