Question

Find Zeroes of p(x) = x^3-5x^2-16x+80 , if two are equal in magnitude but opposite in sign.


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Answer 1

Answer:

Answer

since 2 roots are of different sign and same magnitude

let roots are±α,β

α−α+β=5

β=5

−α

2

β=80

±α=

16

α=±4

roots are 4,−4 and 5

Answer 2

Answer:

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