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Find all roots of the polynomial f(t)=t^4-5t^3+5t^2+17t-42.

 Sep 30, 2022
 #1
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f(t) = (t - 3)(t+2)(t^2 -4t +7)

 Sep 30, 2022
 #2
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Oh okay, thanks!

 

So would the answers be 3, -2,2-sqrt5 and 2+sqrt5..?

Guest Oct 1, 2022
 #3
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The first two are correct, but you need to look at the complex roots again.

 Oct 1, 2022

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