Ответ:
Пошаговое объяснение:
1. (х-8)(6-у) = 6x-xy-24+8y
2. (3с+7)(4-3с) = 12c-9c^2+28-21c = -9c-9c^2+28
3. (5а^2+1)(3у-1) = 15a^2y - 5a^2 + 3y - 1
4. (х+3)(х^2-х-1) = x^3-x^2-x+3x^2-3x-3 = x^3+2x^2-4x-3
5. 5(х+2)(х+3) = 5(x^2+3x+2x+6) = 5x^2+15x+10x+30 = 5x^2+25x+30
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Answers & Comments
Ответ:
Пошаговое объяснение:
1. (х-8)(6-у) = 6x-xy-24+8y
2. (3с+7)(4-3с) = 12c-9c^2+28-21c = -9c-9c^2+28
3. (5а^2+1)(3у-1) = 15a^2y - 5a^2 + 3y - 1
4. (х+3)(х^2-х-1) = x^3-x^2-x+3x^2-3x-3 = x^3+2x^2-4x-3
5. 5(х+2)(х+3) = 5(x^2+3x+2x+6) = 5x^2+15x+10x+30 = 5x^2+25x+30