Предмет: Алгебра, автор: aktimirovroman0

28. Разложите на множители квадратный трехчлен: 1) х^2+2х -8 помагите каму нисложно жилатилно мне нузно сигодня​

Ответы

Автор ответа: majlysevadiana
1

Ответ:

Д=4-4•1•(-8)=-36=6

Х1=-2-6=-4

Х2=-2+6=4

Жауабы-4;4

Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Английский язык, автор: вопросник18
Как перевести с английского на русский май френд
2 года назад
Предмет: Русский язык, автор: dinara6u865
Помогите пожалуйстасочинение на тему:,,Что было бы,если б не было растений? Спасибо:)
2 года назад
Предмет: Английский язык, автор: dmitryshastov
Use Present Perfect. She _____the dishes. (already, wash)They _____their  teeth. (just, clean)Tom and  Jess ____this film. (recently, see)I ____ a letter to my friend. (already, write)My cousin _____ his book. (not find).I can’t find sweets! Who ____all the sweets? (eat)Mike ___ his homework and now is playing in the yard. (already, do)We ___ 3 lessons of Maths! ( just, have)Our class ____ the Kremlin. (lately, visit)Susan ___ a tasty cake for her birthday. (make)You ____ the book by Kipling. ( already, read) Jack ___ his tea. (already, drink)We _________ a lot of English words. (already, learn) He _____ to a new song. (just, listen)I can’t write the dictation! I ___ the rule. (not yet, learn)The children _____ that computer game. (already, play)My classmate _____ the text about London Zoo. (not yet, translate)The teacher ____ us about Present Perfect. (recently, tell).My friend _____ to London. (never, be) This is a book I ____. (never, read)2) Put the words in the correct order.Have, this, we, seen, film, already.Just, has, she, her, done, homework.put on,  the children, just, their coats, have.Has, my father, recently, read, that book.to New York, our family,  been, hasn’t yet.Just, the dog, has, its, eaten, food.Have, a hamster, we, lately, bought.You, have, been, to Madrid, ever?Never, my little brother, seen, an elephant, has.Already, seen, who, the new film, has, about penguins?We, had, have, breakfast, already.Never, I, have, books, about, read, Alice.    Has, he, his keys, found, recently.Has, his mother, cooked, a very tasty dinner, just.Has, Kate, a lot, recently, travelled.3) Ask questions.1) He has bought a new book recently.        - Who….?        - What …?        - When…?2) We have already been to Los Angeles.- Who….?        - Where …?        - When…?3) My sister has already written a report. - Who….?        - What …?        - When…?4) The parrot has learned some new words recently.- Who….?        - What …?        - When…?5) The little boys have already seen two tigers in the Zoo.- Who….?        - What …?        - When…?        - Where…?        - How many…?4) Past Simple or Present Perfect.1) We already ____ the Zoological Society of London. (join)2) Our class ____ to the Zoo yesterday. (go)3) Last year my family ____ to the Black Sea. (go)4) She just _______ from Italy. (return) She ___ there last year. (go)5) Yesterday they ___ a party. (have)6) Last week we ___ a composition. (write)7) I ____ to Boston yet.(not be)8) The pupils ____ the new rule last Monday. (not understand)9) Kate and Jess ___ a nice cat recently. (buy)10) Two days ago my friend and I ___ an UFO. (see)                           Помогите пожалуйста!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
2 года назад
Предмет: Химия, автор: 9ine10een
2) укажите с какими из приведенных ниже вещ-в и при каких условиях взаимод. бромметан:
а) Н2О;
б) Br2;
в) СО2;
г) Na.
Напишите ур-я соответ. р-ий и назовите образ-ся вещ-ва.
8 лет назад
Предмет: Алгебра, автор: topchikO
Нужно подробное решение задачи! Стороны треугольника выражаются уравнениями x+3y-2=0, 2x+y+5=0, 3x-4=0. Найти уравнения высот этого треугольника?
8 лет назад