6х(х²-2х-1)-(2х-1)(3х+2)якщо х-1 споростити вираз
ekaterinapsncen
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09.12.2020 06:30
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3
Відповідь:
-6x+15
Пояснення:
6x(x2-2x-1)-(2x-1)(3x+2) x=-1
-6(x+2-1)-(-2-1)(-3+2)=-6x-12+6-6+4-3+2=-6x+15