N27.8: Преобразуйте выражение в многочлен стандартного вида:
а)(a+2)(a²-a-3)
б)(m-n+1)(m+n)
в)(5b-1)(b²-5b+1)
г)(c-2d)(c+2d-1)
а)(a+2)(a²-a-3)
б)(m-n+1)(m+n)
в)(5b-1)(b²-5b+1)
г)(c-2d)(c+2d-1)
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Answers & Comments
б) =m^2-mn+m+mn-n^2+n=m^2-n^2+m+n
в) =5b^3-b^2-25b^2+5b+5b-1=5b^3-26b^2+10b-1
г) =с^2-2cd+2cd-4d^2-с+2d=c^2-4d^2-с+2d