Предмет: Алгебра, автор: k1R1jIjIeX

помогите пожалуйста​

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Автор ответа: tureen
1

Ответ:

9 {x}^{2} - 24xy + 7 {y}^{2} = \\ = {3}^{2} {x}^{2} - 2 \times 3 \times 4xy + {4}^{2} {y}^{2} - 9 {y}^{2} = \\ = {(3x - 4y)}^{2} - {(3y)}^{2} = \\ = (3x - 4y - 3y)(3x - 4y + 3y) = \\ = (3x - 7y)(3x - y)

Автор ответа: calcium217217
1
Ответ во вложении, удачи
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//Хотя, на окнах нет даже решеток// - После "хотя" есть запятая? Если да, то почему?
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1)      The tourists have arrived to London three days ago but they haven’t seen nothing interesting still.

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помогите, пожалуйста, очень срочно...

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