Question

(3x-(3x/x-4)):(x-(6x-25/x-4))

ps: на скриншоте задание 11.2)

Answer 1

(3х-(3хх-4)):(х-(6х-25х-4))=(3х²х-3хх+4хх):(х²х-6х²х+25х+4хх)=3х²+х х :
: -5х²+25-4хх=3х²+х 25-5х²-4х

(3х-3хх-4) :(х- 6х-25х-4)=(3х(х-4)-3х(х-4)) : (х(х-4)-6х-25(х-4))=
=((3х²-12-3х)(х-4)) : ((х²-4х-6х-25)(х-4)=3(х²-х-4)х-4) :(х²-10х-25)х-4)=
=3(х²-х-4)(х²-10х-25)