Which polynomial function has a leading coefficient of 1 and roots 21 and 31 with multiplicity 1?

f(x) = (x - 2)(x – 31)

f(x) = (x + 21)(x + 3)

f(x) = (x - 2)(x − 3)(x - 2)(x – 31)

fix) = (x + 2y + 211

Which i think is the first one, there may just be a typing error.

Step-by-step explanation:

A polynomial of order n has the following format:

In which a is the leading coefficient, are the roots.

If a root appears m times, they are said to have multiplicity m.

Leading coefficient of 1 and roots 21 and 31 with multiplicity 1

So the correct answer is:

Which i think is the first one, there may just be a typing error.

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answer: d.) the total number of protons and neutrons is 15

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