Home
О нас
Products
Services
Регистрация
Войти
Поиск
pavelpdr23
@pavelpdr23
August 2022
1
16
Report
Разложить квадратный трехчлен на множители:
а) [tex] x^{2} [/tex]- 7х + 10
б) 7[tex] x^{2} [/tex] + 20х - 3
в) 12[tex] x^{2} [/tex] - 588
Please enter comments
Please enter your name.
Please enter the correct email address.
Agree to
terms of service
You must agree before submitting.
Send
Answers & Comments
oganesbagoyan
Verified answer
task/26474004
--------------------
Разложить квадратный трехчлен на множители:
а) x
²
- 7x + 10
б) 7x
²
+ 20x - 3
в) 12x
²
- 588
* * * ax
²+bx +c =a(x -x₁)(x-x
₂) * * *
а)
x² - 7x + 10 =x² - 7x + 10 = (x² - 2x) -(5x +10 ) =x(x-2) -5(x-2) =(x-2)(x-5).
* * *
x² -7x +10 =0 ; D =7² - 4*1*10 = 49 - 40 =9 =3²
x₁ =(7-3)/2*1 =4/2=2;
x
₂=(7+3)/2 =5 . (x -2)(x-5)
* * *
б)
7x² + 20x - 3 =7(x +3)(x - 1/7) || (x +3)(7x - 1) ||
* * *
7x² +20x -3=0 ; D₁ =10² - 7*(-3) = 100+21=121=11²
x₁ =(-10 -11) /7 =-21/7 = -3 ;
x₂=(-10 +11) /7 = 1/7. (x -(-3)) (x -1/7) =7(x+3)(x -1/7) = (x+3)(7x -1).
--------
в)
12x² - 588 =12(x² - 49)=12(x² - 7²) =12(x - 7) (x + 7) .
2 votes
Thanks 1
More Questions From This User
See All
pavelpdr23
August 2022 | 0 Ответы
reshit sistemu uravnenij vtoroj stepeni
Answer
pavelpdr23
August 2022 | 0 Ответы
pomogite pozhalujsta75f8bc4d14c1cc9c91ae4ae5d094c2d0 38092
Answer
pavelpdr23
July 2022 | 0 Ответы
reshit nepolnoe kvadratnoe uravnenie 05h2v kvadrate 1 0
Answer
pavelpdr23
July 2022 | 0 Ответы
h foto011a096f65ed9b695a7292ec069eb5ae 84913
Answer
pavelpdr23
July 2022 | 0 Ответы
nazovite osnovnye formy kapitalisticheskogo proizvodstva
Answer
pavelpdr23
July 2022 | 0 Ответы
smeshali oksid kalciya massoj 150 g s oksidom sery vi vzyatym v izbytke kakaya
Answer
pavelpdr23
July 2022 | 0 Ответы
uprostite vyrazhenie a 32 ps 2 b u ps 4 v h ps
Answer
pavelpdr23
July 2022 | 0 Ответы
h foto
Answer
pavelpdr23
July 2022 | 0 Ответы
pomogite pozhalujsta5d92c40b9cd4b82acb6b59802b506ec6 28965
Answer
pavelpdr23
July 2022 | 0 Ответы
s opredelite promezhutok vremeni na protyazhenii kotorogo ostanavlivalis sani
Answer
рекомендуемые вопросы
rarrrrrrrr
August 2022 | 0 Ответы
o chem dolzhny pozabotitsya v pervuyu ochered vzroslye pri organizacionnom vyvoze n
danilarsentev
August 2022 | 0 Ответы
est dva stanka na kotoryh vypuskayut odinakovye zapchasti odin proizvodit a zapcha
myachina8
August 2022 | 0 Ответы
najti po grafiku otnoshenie v3v1 v otvetah napisano 9 no nuzhno reshenie
ydpmn7cn6w
August 2022 | 0 Ответы
Choose the correct preposition: 1.I am fond (out,of,from) literature. 2.where ar...
millermilena658
August 2022 | 0 Ответы
opredelite kak sozdavalas i kto sozdaval arabskoe gosudarstvo v kracii
MrZooM222
August 2022 | 0 Ответы
ch ajtmanov v rasskaze krasnoe yabloko ispolzuet metod rasskaz v rasskaze opi
timobila47
August 2022 | 0 Ответы
kakovo bylo naznachenie kazhdoj iz chastej vizantijskogo hrama pomogite pozhalujsta
ivanyyaremkiv
August 2022 | 0 Ответы
moment. 6....
pozhalujsta8b98a56c0152a07b8f4cbcd89aa2f01e 97513
sarvinozwakirjanova
August 2022 | 0 Ответы
pomogite pozhalusto pzha519d7eb8246a08ab0df06cc59e9dedb 6631
×
Report "tex] - 588..."
Your name
Email
Reason
-Select Reason-
Pornographic
Defamatory
Illegal/Unlawful
Spam
Other Terms Of Service Violation
File a copyright complaint
Description
Helpful Links
О нас
Политика конфиденциальности
Правила и условия
Copyright
Контакты
Helpful Social
Get monthly updates
Submit
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
task/26474004--------------------
Разложить квадратный трехчлен на множители:
а) x² - 7x + 10
б) 7x² + 20x - 3
в) 12x² - 588
* * * ax²+bx +c =a(x -x₁)(x-x₂) * * *
а) x² - 7x + 10 =x² - 7x + 10 = (x² - 2x) -(5x +10 ) =x(x-2) -5(x-2) =(x-2)(x-5).
* * *
x² -7x +10 =0 ; D =7² - 4*1*10 = 49 - 40 =9 =3²
x₁ =(7-3)/2*1 =4/2=2;
x₂=(7+3)/2 =5 . (x -2)(x-5)
* * *
б) 7x² + 20x - 3 =7(x +3)(x - 1/7) || (x +3)(7x - 1) ||
* * *
7x² +20x -3=0 ; D₁ =10² - 7*(-3) = 100+21=121=11²
x₁ =(-10 -11) /7 =-21/7 = -3 ;
x₂=(-10 +11) /7 = 1/7. (x -(-3)) (x -1/7) =7(x+3)(x -1/7) = (x+3)(7x -1).
--------
в) 12x² - 588 =12(x² - 49)=12(x² - 7²) =12(x - 7) (x + 7) .