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

 Aug 3, 2021
 #1
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The roots are -2, 7, 1 + sqrt(2)*i, 1 - sqrt(2)*i.

 Aug 3, 2021
 #2
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I entered that answer and it said it's wrong.

 Aug 3, 2021

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