Answer :

altavistard

Answer:

both (x - 5) and (x - 3) are factors of x^2  - 2x + 15

Step-by-step explanation:

Please write this all on one line:  x^2  - 2x + 15.

Recognize that 3*5 = 15.  Possible factors of x^2  - 2x + 15 are thus (x - 5) and (x + 3).  Multiplying these together results in x^2  - 2x + 15, so we have verified that both (x - 5) and (x - 3) are factors of x^2  - 2x + 15.

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Given:

f(x) = x² - 2x + 15

Solution:

This function f(x) will have the negative "discriminant" in root ; thus forming complex roots

So this function has no rational roots

∴ None of the above is the right answer .

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