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glazovsergey201
@glazovsergey201
April 2022
1
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Решите плес очень надо!!!!!!!
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ann1885
№17 = (х-а)(х+а) / а*(х+а) - х/а = (х-а)/а - х/а = х-а-х / а = -а/а = -1№18ОДЗ х≠0 и х≠32(х-3)+х²=92х-6+х²-9=0х²+2х-15=0D=4+60=64=8²х1=-2-8/2=-5х2=-2+8/2=3 - не удовлетворяет ОДЗответ -5
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ann1885
№19 4+2b+8=0 2b=-12 b=-6
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