Предмет: Алгебра, автор: PEIIIEHNE

Решите уравнение! За понятный ответ поставлю 5 звёзд и хороший отзыв!

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Ответы

Автор ответа: eminbagirov53

Ответ:

а)

${x}^{2} = 16 \\ x = \sqrt{16} \\ x = 4 \\ x = - 4$

б)

${x}^{2} = - 7 \\ x = \sqrt{ - 7 \\ }$

не имеет действительных корней

в)

$\sqrt{x} = 5$

возведем обе части в квадрат чтобы избавится от корня:

x=25

г) не имеет действительных корней

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Вариант II
I. Задание 1. Read the text. Complete the sentences
Charles Spencer Chaplin was born in 1889 in London. His father died when he was a child and the family didn’t have much money. Charlie first performed on the theatre stage at the age of five.
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