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Dmitriy789 [7]
3 years ago
10

• Given the function, f(x) = x3 – 5x2 + 9x – 45, determine the number of roots and identify them.

Mathematics
1 answer:
dezoksy [38]3 years ago
6 0
x3 - 5x2 + 9x - 45 = 0
 It is a polynomial of degree three, therefore, it has three roots.
 For this case, what we can do is factorize to write the polynomial in an easier way and thus be able to find the roots.
 Factoring we have:
 (x - 5) (x ^ 2 + 9) = 0
 x = 5
 x = 3i
 x = -3i
 Answer: 
 three roots: 
 x = 5 
 x = 3i 
 x = -3i
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