Предмет: Математика, автор: Али777777

9+6а-(а+3)^2 упростить выражение и найдите его значение при a=0,7

Ответы

Автор ответа: kratgv

9+6а-(а+3)²=9+6а - (а² +6а+9)=9+6а-а²-6а-9=-а²

при a=0,7, -а²=-0,7²=-0,49

Али777777: А ответ какой?

kratgv: -а²; -0,49.

Али777777: Точно? Там надо упростить

Али777777: Брат там без минуса идёт

Али777777: просто 0,49

kratgv: Пиши как хочешь. Я упростила и нашла значение.

kratgv: 0,49 неправильно.

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Биология, автор: popovvlad2k20

За способом живлення жук-гробарик, жук-гнойовик, дощовий черв'як ____ належать до ____ .
Срочно! Дам 50 б

1 год назад

Предмет: Литература, автор: dan243502

Продовження оповідання "Останній дюйм" - ...

А) "Розбите сідло"

Б) "Дипломат"

В) "Морський орел"

Г) "Клітка для акули"

1 год назад

Предмет: Английский язык, автор: MotMmike

66 We mustn’t _______ late. My mum is waiting.
a) beb) being c) –d) to be
67I________ do anything tomorrow. It’s a holiday.
a) mustn’tb) don’t have toc) haven’t gotd) don’t have
68 Don’t forget to ______ your swimsuit when you go on holiday.
a) bookb) packc) stayd) travel
69 You should ________ careful at night. It’s dangerous in the dark.
a) –b) to bec) beingd) be
70 He _______ work so hard. He needs to relax.
a) shouldb) shouldn’tc) mustd) doesn’t have to
71 __________ your homework yet?
a) Did youb) You didc) You have doned) Have you done
72 We __________ to America last year.
a) have beenb) did goc) have goned) went
73 She _______ to school yesterday.
a) didn’t gob) hasn’t comec) doesn’t god) hasn’t gone
74 Where’s Paul? He’s ________ to the shops.
a) beenb) wentc) god) gone
75 They haven’t finished their dinner _____.
a) justb) yetc) alreadyd) ever
76 Quick, sit down. The film has ____ started.
a) everb) yetc) justd) never
77 I’ve only been here one day and I’ve _____ met some really nice people.
a) everb) yetc) justd) already
78 Has she ever failed an exam? No, she _______.
a) hasn’tb) haven’tc) didn’td) hasn’t failed
79 Do you often ________ sailing?
a) playb) doc) –d) go
80They won two matches but they couldn’t ______ England in the final.
a) winb) wonc) beatd) beaten
81 London is on ____ River Thames.
a) –b) ac) thed) that
82 Cornwall is in _________ of England
a) south-westb) the south-westc) the west-southD west-south
83Have you ever been to ____ Africa?
a) Anb) Ac) Thed) –
84 How many people ______ in your class?
a) there areb) be there c) is thered) are there
85 ______ the first man on the moon?
a) Who wasb) Who didc) What wasd) Who were
86 ______ the number 38 bus go? To the station.
a) When doesb) Who doesc) What doesd) Where does
87 The ______ today is 380 degrees.
a) temperatureb) hotc) weatherd) season
88 One day I will _______ rich.
a) –b) bec) beingd) to be
89 She will______ pass her driving test.
a) ever b) don’tc) won’td) never
90 The world ______ get cleaner.
a) don’tb) isn’tc) won’td) hasn’t
91 Will you move to another country? No, I ______ .
a) willb) don’tc) won’t moved) won’t
92 I’ll have a job ____ three years time.
a) atb) byc) ind) for
93 Will you finish your work ___ next Saturday?
a) inb) byc) atd) to
94 Pandas and whales are both ________ animals.
a) dangerous b) endangered c) danger d) dangerously
95 She can sing very _________ .
a) more beautifulb) beautifulc) beautifullyd) more beautifully
96He’s a very _______ driver.
a) safeb) safelyc) safetyd) more safe
97 Our teacher speaks really ______
a) quietb) quietlyc) too quietd) more quiet
98 You drive too _____
a) very fastb) fasterc) the fastestd) fast
99Cars and factories _________ the air.
a) protectb) savec) wasted) pollute
100 Don’t throw that old paper in the bin. You should _______ it.
a) recycleb) wastec) protectd) save

1 год назад

Предмет: Химия, автор: aaaaaaaaak

який об єм газу (н,у) виділиться при взаємодії 27.6 г калій каронату з етановою кислотою ?
а)11.2л
б)4.48л
в)2.24л
г)44.8л

7 лет назад

Предмет: Обществознание, автор: Mileeeshaa

РЕБЯТ, СРОЧНО :///
ОЧЕНЬ НУЖНО

7 лет назад