Ответ:
в объяснении
Объяснение:
1. (a+x)(y-b) = ay-ab+xy-bx
2. (c-5)(4-d) = 4c-cd-20+5d
3. (a-10)(2a+1) = 2a²+a-20a-10 = 2a²-19a-10
4. (3x-2)(5x+4) = 15x²+12x-10x-8 = 15x²+2x-8
5. (7n-7)(8-8n) = 56n-56n²-56+56n = -56n²+112n-56
1. (а+х)(у-b)=ay -ab + xy - bx
2. (c-5)(4-d)=4c - cd -20 + 5d
3. (a-10)(2a+1)=2a² + a -20a - 10 = 2a² - 19a - 10
4. (3x-2)(5x+4)=15x² + 12x - 10x - 8 = 15x² + 2x - 8
5. (7n-7)(8-8n)=56n - 56n² - 56 + 56n = -56n² + 112n - 56
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Answers & Comments
Ответ:
в объяснении
Объяснение:
1. (a+x)(y-b) = ay-ab+xy-bx
2. (c-5)(4-d) = 4c-cd-20+5d
3. (a-10)(2a+1) = 2a²+a-20a-10 = 2a²-19a-10
4. (3x-2)(5x+4) = 15x²+12x-10x-8 = 15x²+2x-8
5. (7n-7)(8-8n) = 56n-56n²-56+56n = -56n²+112n-56
Объяснение:
1. (а+х)(у-b)=ay -ab + xy - bx
2. (c-5)(4-d)=4c - cd -20 + 5d
3. (a-10)(2a+1)=2a² + a -20a - 10 = 2a² - 19a - 10
4. (3x-2)(5x+4)=15x² + 12x - 10x - 8 = 15x² + 2x - 8
5. (7n-7)(8-8n)=56n - 56n² - 56 + 56n = -56n² + 112n - 56