Предмет: Математика, автор: Настя59

решите уравнение под буквами в, д:

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Автор ответа: miron2077

х²-4х+4=0
х=4+√(16-16) = 4 = 2
   2 2

х²+х=10х-20
х²-9х+20=0
х₁=9+√(81-80) = 9+1 = 5
   2 2
х₂=9-√(81-80) = 9-1 = 4
   2 2

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