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hichkok12 [17]
3 years ago
13

If a polynomial with real coefficients is of degree 3. Can we say there must be at least 1 real root?

Mathematics
1 answer:
Shalnov [3]3 years ago
8 0

Answer:

A polynomial of degree 3 has 3 linear factors… (1): (x - i ) (x + i ) (x + a) . If any 2 factors are conjugate as here first 2 factors are conjugate with complex roots. So at least one root should be real.

Step-by-step explanation:

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