Предмет: Алгебра, автор: Аноним

срочно помогите пожалуйста!

Приложения:

Ответы

Автор ответа: sedinalana

(9-b)(9+b)-(3-b)(9+3b+b²=81-b²-27+b³=54-b²+b³
b=-1
54-1-1=52
Ответ А

Автор ответа: Dim4ikwot231

B = ответ я знаю это правильно я с учителям решал

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Физика, автор: sasaanntvvv

Помогите пожалуйста Высота грузового отсека автомобиля составляет 2,4 м, ширина 2 м и длина 8 м. Сколько упаковочных ящиков можно разместить друг на друге, если высота ящика составляет 0,2 м, длина 0,5 м, ширина 0,3 м?

6 лет назад

Предмет: Английский язык, автор: astekabykova2002

Помогите найти инфинитивы, инфинитивные обороты и герундий если есть.
We are in New York now. Together with Jane Snow and thousands of young men and women we are taking part in a meeting of protest against unemployment. Students and professors, workers and employees are protesting against the threat of being fired. You can see slogans and placards everywhere. They say: «We want job! Unemployment — no!»
Look! Jane is making a speech. Listen: «Why can't the government provide job for us? Mr. President must think of the development of national economy and not of supporting political regimes in other countries. He may spend this money on food for poor Americans, but he mustn't use it for military purposes». Everybody is shouting in support of Jane.
Nell Pavlova is also at the meeting but in Rostov. This meeting is taking form of the tribunal. The represent atives of many countries of Asia, Africa and Latin America are taking part in the work of this tribunal. They accuse racism and nazism. Everything looks like the real sitting of the court. You can see the prosecutor and the chairman of the tribunal. The prosecutor is speaking about the crimes committed by neonazists and racists in different countries of the world. Then the first witness of the prosecution is taking place at the witness-stand.1 He is giving evidence of financing criminals by some powerful groups. You may also hear the other witnesses giving the true facts of assassinating the progressive leaders in different countries. You can't see the defence counsel here. Nobody wants to defend racists and nazists. The hearing is over and the chairman is reading the sentence. The tribunal finds the neonazism and racism guilty in numerous crimes against humanity and calls on the progressive youth of the world to strengthen the unity in fighting against this dangerous ideology.

6 лет назад

Предмет: Алгебра, автор: zliza4405

верно ли выполнено тождество
помогите пожалуйста

6 лет назад

Предмет: Математика, автор: sofiyamo

Составьте уравнение им решите. Пожалуйста помогите, очень срочно

10 лет назад

Предмет: Математика, автор: msleraver

Решите уравнение: 1)8х(2степень)+6х=0
2)х(2 степень)+4х=0
3)12х(2степень)-х=0
4)у(2степень)-5у=0

10 лет назад