Question 619213
Which of the following are roots of the polynomial? 
How do i find these?

x3 - x2 - 5x - 3
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Nothing followed.
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Try the integers first, 3 & -3
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{{{f(x) = x^3 - x^2 - 5x - 3}}}
{{{f(3) = 27 - 9 - 15 - 3 = 0}}}
That's one.
Divide {{{x^3 - x^2 - 5x - 3}}} by (x-3)
--> {{{x^2 + 2x + 1 = (x+1)^2}}}
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x = -1, -1, 3