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krakyy72
@krakyy72
August 2022
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[tex] (\sqrt{7 } - \sqrt{3} ) {}^{2} [/tex]
помогите алгебра
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evvoronina1
Воспользуемся формулой:
(a - b)² = a² - 2ab + b²
(√7 - √3)² = (√7)² - 2•(√7)• (√3) + (√3)² =
= 7 - 2√(7•3) + 3 = 10 - 2√21
Ответ: 10 - 2√21
1 votes
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Answers & Comments
(a - b)² = a² - 2ab + b²
(√7 - √3)² = (√7)² - 2•(√7)• (√3) + (√3)² =
= 7 - 2√(7•3) + 3 = 10 - 2√21
Ответ: 10 - 2√21