Dany jest wielomian W(x)=x⁵-6x⁴+ax³+4x. Wiadomo,że W(-2)=8. Oblicz a.
8 = (-2)5 - 6(-2)4 + a (-2)3 + 4(-2)
8= -32 - 96 - 8a - 8
8+136 = - 8a
144= - 8a
a= - 18
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8 = (-2)5 - 6(-2)4 + a (-2)3 + 4(-2)
8= -32 - 96 - 8a - 8
8+136 = - 8a
144= - 8a
a= - 18