On a skiing trip, there are five people but only three pairs of skis. how many different groups of three could ski?

So let's start by naming our people, let's say Robert, Sasha, Tyler, Bryan, and Katie. Now start listing all the ways that they can go in a organized way.
Robert, Sasha, Tyler
Robert, Sasha, Bryan
Robert, Sasha, Katie
Robert, Tyler, Bryan
Robert, Tyler, Katie
Robert, Bryan, Katie
Sasha, Tyler, Bryan
Sasha, Tyler, Katie
Tyler, Bryan, Katie
And that is it, 9, without repeating the same groups

Idont knowgfdhdhfhggg.

Hello!

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

why?

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!