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Nuyshka
@Nuyshka
July 2022
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помогите решить примеры 7 класс
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chamomile03
Verified answer
1. (x-2)(x-11)-2x(4-3x) = x²-11x-2x+22-8x+6x² = 7x²-21x+22
2. (a+6)(a-3)+(a-4)(a+5) = a²-3a+6a-18+a²+5a-4a-20 = 2a²+4a-38
3. (y-8)(2y-1)-(3y+1)(5y-2) = 2y²-y-16y+8-15y²+6y-5y+2 = -13y²-16y+10
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Answers & Comments
Verified answer
1. (x-2)(x-11)-2x(4-3x) = x²-11x-2x+22-8x+6x² = 7x²-21x+222. (a+6)(a-3)+(a-4)(a+5) = a²-3a+6a-18+a²+5a-4a-20 = 2a²+4a-38
3. (y-8)(2y-1)-(3y+1)(5y-2) = 2y²-y-16y+8-15y²+6y-5y+2 = -13y²-16y+10