Номер 7В,Г...........

Question

Номер 7
В,Г...........

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Answer 1

В) (rd-r^3)/(d-r^4) - (rd-r^5+r^3)/(d-r^4) = (rd-r^3-rd+r^5-r^3)/(d-r^4) =
= (r^5-2r^3)/(d-r^4)

г) (i-7u)/(iu) - (i+7u)/(iu) = (i-7u-i-7u)/(iu) = -14u/(iu) = -14/i

Answer 2

В
(rd-r^3)/(d-r^4) - (rd-r^5+r^3)/(d-r^4) = (rd-r^3-rd+r^5-r^3)/(d-r^4) =
= (r^5-2r^3)/(d-r^4)=r^3(r^2-2)/(d-r^4)
г
(i-7u)/(iu) - (i+7u)/(iu) = (i-7u-i-7u)/(iu) = -14u/(iu) = -14/i