Asked by jay
Find all zeros of the polynomial
P(x)=x^3 - 2 x^2 - 9 x - 30.
P(x)=x^3 - 2 x^2 - 9 x - 30.
Answers
Answered by
Steve
look for easy roots first: 1,2,3,5,6
A little synthetic division shows that
P(x) = (x-5)(x^2+3x+6)
and you can do the quadratic as usual
A little synthetic division shows that
P(x) = (x-5)(x^2+3x+6)
and you can do the quadratic as usual
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