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nursina1105
@nursina1105
August 2021
1
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ДАЮ 45 БАЛЛОВ!!! Преобразовать в многочлен стандартного вида выражение:
(6х2 + 5х + 7) – (4х2 + х - 5) ;
-3a (a 4 - 6a2 + 5) ;
(х + 7)(2х - 3) ;
(х + 1)(х2 + х - 6) .
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oppression
1) (6х²+5х+7)-(4х²+х-5)=6х²+5х+7-4х²-х+5=2х²+4х+12.
2) -3а(а⁴-6а²+5)=-3а·а⁴·(-6а²)-3а·5=-3а⁵+18а³-15а.
3) (х+7)(2х-3)=2х²-3х+14х-21=2х²+11х-21.
4) (х+1)(х²+х-6)=х³+х²-6х+х²+х-6=х³+2х²-5х-6.
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Answers & Comments
2) -3а(а⁴-6а²+5)=-3а·а⁴·(-6а²)-3а·5=-3а⁵+18а³-15а.
3) (х+7)(2х-3)=2х²-3х+14х-21=2х²+11х-21.
4) (х+1)(х²+х-6)=х³+х²-6х+х²+х-6=х³+2х²-5х-6.