Предмет: Алгебра, автор: Mopkovka

найдите корни уравнения х+4= $frac{5}{2x-1}$

Ответы

Автор ответа: Света19999

(x+4)(2x-1) = 5 при x неравном 0,5
2x^2 + 7x - 9 = 0
D = 49 + 72 = 121 =11^2
x1 = (-7+11)/4=1
x2 = (-7-11)/4 = -4,5
Ответ: 1 и -4,5

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Математика, автор: subrxof

Брат може зібрати всі суниці з грядки за 5 год, а сестра - за 8 год. Яку частину врожаю вони зберуть за 1 год, якщо працюватимуть разом? За 3 год спільної роботи?

6 лет назад

Предмет: Английский язык, автор: ffoonnkk

Marta ___. She has just failed her exam. (cry) *
Where is Kelly? She ___ a shower. (have) *
It’s still snowing. It … for hours. (snow) *
Susan McFendry ___ a huge supermarket in Barcelona now. (own) *
Why ___you porridge? What's wrong?(smell) *
Jill and Clara ___ their friends at the club tonight. (meet) *
They ... about travelling to Spain. (think) *
Sam, you ... always (close) the windows! How can you work here? It's so hot! *
Why ... you the salad? Is it fresh?(taste) *
Are you alright? You __ very pale now!(look) *
Barbara … two prizes so far(win) *
It ___ to me that Judy is lying. (seem) *
Sam always ... (leave) his socks on the floor! *
Prawn salad ... delicious. (taste) *
This History quiz ___ 75 questions. (include) *
How long … you for them? It's 5 pm! (wait) *
Can you hear that noise? What ... children ?(do)
The picture you ... (look) at now belongs to my grandpa. Do you like it? *
Oh! The chicken __ too salty now.(taste) *
Sally is very tired. She … the house all day.(clean) *
Paul, please, hurry up! – Yes, just a minute. I __for my keys.(look) *
My sisters ___ a rest in the garden right now. (have) *
My mother and sister (pack) their suitcases since 10 o’clock. They are very tired. *
Rebecca has been offered a new job. - Is she going to take it? - She _____(not / know). She ____ (think) about it. *
What about ice cream? – I _ it’s a great idea!(think) *
We__________________(see) Judy tonight, we'll tell her about the letter. *
They … (know) each other since 2007. *
Robby ... Jame's house is wonderful. (think) *
Rebecca is hungry. She ___ to buy something to eat right now. (want) *
Mr. Green is busy. He ____ a new window in the kitchen.(fit) *
Lucy and Sarah ___ coffee at the moment. (drink) *
I'm not thirsty. I ... just (drink) fresh orange juice. *
This dress ... (suit) me anymore. I ... to buy another one now! *
Jerold ... (buy) some bread and cheese, and now he can make sandwiches. *
Is everything clear? ___ you any questions? (have) *
The dish-washer is OK now. My brother … it.(repair) *
Look! Jerold___ a new sports car. (have) *

6 лет назад

Предмет: Русский язык, автор: presnakovleonid10

Шубка у лисы теплая ,пушистая.
основа предложения

6 лет назад

Предмет: Алгебра, автор: маргарита1998535925

(5х-3)(5х+3)=4х(3х+2)

9 лет назад

Предмет: Математика, автор: elic

Пусть AC и BD - хорды окружности, E - точка их пересечения. Известно, что AE = 9м, CE = 4 м, DE = 3 м. Найдите BD помогите пожалуйста решить, сегодня нчью надо ответ отправить

9 лет назад