Pierwiastkiem wielomianu W(x)= x^3 - mx^2 -3x + n jest liczba -2. Wyznacz m
Jak to zrobić?
W(-2) = 0
W(-2) = -8 -4m +6 + n = 0
-4m =- n+2
4m = n-2
m= (n-2)/4
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W(-2) = 0
W(-2) = -8 -4m +6 + n = 0
-4m =- n+2
4m = n-2
m= (n-2)/4