решите уравнения
1) (√5+√y)(√5-√y)
2 ) 7-b√7
3) √12+√15
4) 2√b+10√a-√ab-5a
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решите уравнения
1) (√5+√y)(√5-√y)
2 ) 7-b√7
3) √12+√15
4) 2√b+10√a-√ab-5a
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Answers & Comments
(√5)^2-(√y)^2=5-y