Объяснение:
1.
a)
14b/20b⁴=7/10b³
б)
(4х-16)/(х²-16)=(4(х-4))/((х-4)(х+4))=4/(х+4)
в)
(9у³-6у²)/(2-3у)=(3у²(3у-2))/(2-3у)=
=(-(3у²(2-3у)))/(2-3у)= - 3у²
г)
(9х²-4)/(3х-2)=((3х-2)(3х+2))/(3х-2)=
=3х+2
д)
(х²+2х+1)/(х⁴+х³)=((х+1)²)/(х³(х+1)=
=(х+1)/х³
е)
(х²+8х+15)/(х²+3х-10)=
=(х²+3х+5х+15)/(х²-2х+5х-10)=
=((х(х+3)+5(х+3))/(х(х-2)+5(х-2))=
=((х+3)(х+5))/((х-2)(х+5))=(х+3)/(х-2)
2.
(2х+18)/3=0 •3
2х+18=0
2х= -18
х= -18:2
х= -9
3. на фото
у=(х+1)/(х+1)
таблица:
х 0 1
у 1 1
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Объяснение:
1.
a)
14b/20b⁴=7/10b³
б)
(4х-16)/(х²-16)=(4(х-4))/((х-4)(х+4))=4/(х+4)
в)
(9у³-6у²)/(2-3у)=(3у²(3у-2))/(2-3у)=
=(-(3у²(2-3у)))/(2-3у)= - 3у²
г)
(9х²-4)/(3х-2)=((3х-2)(3х+2))/(3х-2)=
=3х+2
д)
(х²+2х+1)/(х⁴+х³)=((х+1)²)/(х³(х+1)=
=(х+1)/х³
е)
(х²+8х+15)/(х²+3х-10)=
=(х²+3х+5х+15)/(х²-2х+5х-10)=
=((х(х+3)+5(х+3))/(х(х-2)+5(х-2))=
=((х+3)(х+5))/((х-2)(х+5))=(х+3)/(х-2)
2.
(2х+18)/3=0 •3
2х+18=0
2х= -18
х= -18:2
х= -9
3. на фото
у=(х+1)/(х+1)
таблица:
х 0 1
у 1 1