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Lena502000
@Lena502000
June 2022
1
25
Report
.Упростите выражение:
(3x – 7y)(2х + 3y) – (4x - 5y)(3x + y)
Правильный ответ?
1) - 6х - 6хy – 16y ; 2) - 6х2 + 6хy – 26y2;
3) - 6х2 + 6хy – 16y2 ; 4) 6х2 + 6хy – 16y2 .
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Answers & Comments
njhieyjdf
(3х-7у)(2х+3у)-(4х-5у)(3х+у)=6х²+9ху-14ху-21у²-(12х²+4ху-15ху-5у
²)=
6х
²+9ху-14ху-21у²-12х²-4ху+15ху+5у²=-6х²+6ху-16у
²
Ответ:4
3 votes
Thanks 2
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Answers & Comments
6х²+9ху-14ху-21у²-12х²-4ху+15ху+5у²=-6х²+6ху-16у²
Ответ:4