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MarMaLade
@MarMaLade
July 2022
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Алгебра, 9 класс. Найдите значение выражения (на фото). Заранее благодарна :)
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sedinalana
Verified answer
1)b²-3b-1/b+3=(b³-3b²-1+3b)/b=(b-1)³/b
2)(b-1)³/b*b(b+1)/(b-1)(b+1)=(b-1)²
b=2,5
(2,5-1)²=(1,5)²=2,25
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Answers & Comments
Verified answer
1)b²-3b-1/b+3=(b³-3b²-1+3b)/b=(b-1)³/b2)(b-1)³/b*b(b+1)/(b-1)(b+1)=(b-1)²
b=2,5
(2,5-1)²=(1,5)²=2,25