Предмет: Алгебра, автор: mukasevasabina

1.Вычислите наиболее рациональным способом:
32²-31² 30²-29²
—
42²-21² 40²-19²
помогите пожалуйста срочно​

Приложения:

Ответы

Автор ответа: manyny06
1

Ответ:

решение смотри на фотографии

Приложения:
mukasevasabina: спасибо большое
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Прочитайте текст еще раз и выбрать лучший ответ:
A) My interests in school
B) Why I became fascinated by science
C) How our world works

Ответить на вопросы:

1) What part did a schoolbook play in the author`s life?
2) Why was a long plane journey an important moment for him?
3) What in particular interests him about scientists?
4) What does the author mean when he asks if he should take an umbrella to the races?
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