1) 367+876=1243
2) 1243:765=1(ост.478)
=8*√(81/4)-√(36/1)=8*9/2-6= 36-6= 30 -ответ
Y' = 4(x-3)- (4x+1)*1/ (x-3)² = 4x-12-4x-1/ (x-3)² = -13/(x-3)²
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5 7/9, т.к. 11/9= 1 2/9 сокращаем и складываем 2 4/9 и 3 3/9