• Предмет: Алгебра
  • Автор: Patimat11111
  • Вопрос задан 8 лет назад

Помогите решить какой- нибудь

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Ответы

Ответ дал: aliyas1
0

 sqrt{ {80 }^{2} - {48}^{2}   }  =  \  =  sqrt{(80 - 48)(80 + 48)}  =  \  =  sqrt{32 times 128}  =  sqrt{32 times 32 times 4}  =  \  = 32 times 2 = 64
sqrt{ {490 }^{2} - {392}^{2}   }  =  \  =  sqrt{(490 - 392)(490 + 392)}  =  \  =  sqrt{98times 882}  = \  =   sqrt{98 times 98 times 9}  = 98 times 3= 294
sqrt{ {178 }^{2} - {160}^{2}   }  =  \  =  sqrt{(178 - 160)(178 + 160)}  =  \  =  sqrt{18times338}  = \  =   sqrt{9 times 2 times 2 times 169}  = \  = 3 times 2 times 13 = 78
sqrt{ {435}^{2} - {72}^{2}   }  =  \  =  sqrt{(435 - 72)(435+ 72)}  =  \  =  sqrt{363times 507}  = \  =   sqrt{3 times 121 times 3 times 169}  =  \  = 3times 11 times 13= 429
sqrt{ {771 }^{2} - {96}^{2}}  =  \  =  sqrt{(771 - 96)(771 + 96)}  =   \ =  sqrt{675 times 867}  = \  =  sqrt{225 times 3 times 3 times 289}  =  \  = 15 times 3 times 17 = 765
sqrt{ {195}^{2} - {168}^{2}   }  =  \  =  sqrt{(195- 168)(195+ 168)}  =  \  =  sqrt{27times 363}  = \  =   sqrt{9 times 3times 3 times 121}  =  \  = 3 times 3times 11= 99
sqrt{ {520 }^{2} - {200}^{2}   }  =  \  =  sqrt{(520 - 200)(520 + 200)}  =  \  =  sqrt{320times 720}  = \  =   sqrt{64 times 5times 5 times 144}  =  \  = 8times 5 times 12= 480



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