3 years ago

Given a polynomial f(x), if (x + 5) is a factor, what else must be true?

1 answer:

4 0

Rule: If x-k is a factor of p(x), then p(k) = 0. This is a special case of the remainder theorem.

Using that rule, we can see that x+5 is really x-(-5) so k = -5.

Therefore,

p(k) = 0
p(-5) = 0

so the answer is choice D.

You might be interested in

I can't find the answer for 46.3 divided by 1.5 Help!

Olenka [21]

46.3/1.5 = 30.87 or 1.5/46.3 = 0.034
Is that what your looking for??

8 0

2 years ago

There are 25 towns in a certain country, and every pair of them is connected by a train route. How many train routes are there?

7nadin3 [17]

Answer:

Step-by-step explanation:

a pair=2

so 25/each pair of towns

25/2=12+1=13

5 0

3 years ago

Y=3x²+3x+1,find the value of the discrimination

Rufina [12.5K]

Answer:

Step-by-step explanation:

a = 3

b = 3

c = 1

Discriminate = sqrt(b^2 - 4ac)

Discriminate = sqrt(9 - 4*3*1)

Discriminate = sqrt(9 - 12)

Discriminate = sqrt(-3)

What negative value means that there are no real roots and the y intercept = 1. You should always graph this kind of question, which I am doing for you. I use Desmos which is a very handy program.

You should notice that the minimum is above the x axis. That means there are no real roots, just as the discriminate tells you.