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JulliaHelp
@JulliaHelp
August 2022
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(−5x+5y)(x+9)−(−5x−4y)(7x−4) упростите выражение
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svetka1574
(5y - 5x)(x + 9) + (7x - 4)(5x + 4y) =
=
5xy
+ 45y - 5x^2 - 45x + 35x^2 +
28xy
- 20x - 16y =
= 30x^2 - 65x + 33xy + 29y
1 votes
Thanks 3
ShirokovP
- 65x
ShirokovP
перепроверьте
ShirokovP
Verified answer
(-5Х² - 45Х + 5ух+45у) -(-35х² +20х-28ух+16у) = -5Х² - 45х +5ух+45у +35х²- 20х + 28ух-16у = 30х²-65х+33ух+29у
3 votes
Thanks 3
JulliaHelp
Спасибо
ShirokovP
Не за что
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Answers & Comments
= 5xy + 45y - 5x^2 - 45x + 35x^2 + 28xy - 20x - 16y =
= 30x^2 - 65x + 33xy + 29y
Verified answer
(-5Х² - 45Х + 5ух+45у) -(-35х² +20х-28ух+16у) = -5Х² - 45х +5ух+45у +35х²- 20х + 28ух-16у = 30х²-65х+33ух+29у