Question

问道数学题,(x三次方-2x二次方+ax+2)除于(x二次方-4x+1)=x+2,求a等于多少?那个看着不方便拿...

Answer 1

x^3-2x^2+ax+2=(x+2)(x^2-4x+1)

x^3-2x^2+ax+2=x^3-2x^2-7x+2

a=-7