Can someone help me please? Check my work
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Can someone help me please? Check my work

[From: ] [author: ] [Date: 11-10-25] [Hit: ]
3+(-4)+(-1)=-2-I got the same roots, and the same sum.......
9. What is the sum of the roots of the polynomial shown below?

f(x) = x^3+2x^2-11x-12

My work:
x^3 +2*x^2 -11*x -12 = 0 =>
=> x^3 +2*x^2 -11*x -12 = 0
=> (x -3)*(x +4)*(x +1) = 0

the roots are 3,-4,-1

I just add them,
3+(-4)+(-1)=-2

-
I got the same roots, and the same sum.
1
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