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Asoooollll
@Asoooollll
June 2021
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Решите, плз. Тема:разность квдаратов
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bekezhanovadana
1. а) m^2-n^2=(m-n)(m+n)
б) 9х^2-у^2= (3х-у)(3х-у)
в) 49с^2-0,04а^2= (7с-0,2а)(7с+0,2а)
2. а) 121-36х^2= (11-6х)(11+6х)
б) х^4у^4-9= (х^2у^2-3)(х^2у^2+3)
в) 16/49а^2-1/9в^2= (4/7а-1/3в)(4/7а+1/3в)
3. а) 86^2-14^2= (86-14)(86+14)= 7200
б) 15,9^2-5,9^2= (15,9-5,9)(15,9+5,9)= 218
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Answers & Comments
1. а) m^2-n^2=(m-n)(m+n)
б) 9х^2-у^2= (3х-у)(3х-у)
в) 49с^2-0,04а^2= (7с-0,2а)(7с+0,2а)
2. а) 121-36х^2= (11-6х)(11+6х)
б) х^4у^4-9= (х^2у^2-3)(х^2у^2+3)
в) 16/49а^2-1/9в^2= (4/7а-1/3в)(4/7а+1/3в)
3. а) 86^2-14^2= (86-14)(86+14)= 7200
б) 15,9^2-5,9^2= (15,9-5,9)(15,9+5,9)= 218