Ответы на вопрос:
1)(m²+3m)/(m-1)(m+²-4m)/(m-1)(m-3)= =[m(m+3)(m-3)-m(m-4)(m+4)]/(m-1)(m+4)(m-3)= =[m(m²-9)-m(m²-16)]/(m-1)(m+4)(m-3)= =m(m²-9-m²+16)/(m-1)(m+4)(m-3)=7m/(m-1)(m+4)(m-3) 2)7m/(m-1)(m+4)(m-3) : m/(m+4)(m-3)= =7m/(m-1)(m+4)(m-3)*(m+4)(m-3)/m=7/(m-1)
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