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Эмилии1
@Эмилии1
July 2022
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пожалустаааа аомогите 1 и 2
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idql
1) 87²-2×87×92+92²=(87-92)² - формула сокращенного умножения
(87-92)²= -5²=25
2) (2x-3y)(3x+2y)+y(6y+5x)=6x²+4xy-9xy-6y²+6y²+5xy=6x²
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Answers & Comments
(87-92)²= -5²=25
2) (2x-3y)(3x+2y)+y(6y+5x)=6x²+4xy-9xy-6y²+6y²+5xy=6x²