Предмет: Алгебра, автор: Гр13

Найдите значение выражения 2а^2, при а = √3-1. Помогите, пожалуйста!

Ответы

Автор ответа: Wansbe
0
2a² = 2(√3 - 1)² = 2(3 - 2√3 + 1) = 6 - 4√3 + 2 = 8 - 4√3 = 4(2 - √3)
Автор ответа: vkgeorgi
0
помоги решить пример sin 7Alpha + sin 5 Alpha/cos7Alpha-cos5Alpha
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1 Complete the sentences with the correct present perfect form of the verbs in the box.
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