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Ilia_Sergeevich [38]
3 years ago
13

Which of the number(s) below are potential roots of the function? p(x) = x4 + 22x2 – 16x – 12 ±6 ±1 ±3 ±8

Mathematics
2 answers:
Sliva [168]3 years ago
8 0

We are given Polynomial p(x) = x^4 + 22x^2 – 16x – 12.

We need to find the potential roots of the function.

We know, potential roots are all the rational numbers in terms of p/q.

Where p are the factors of constant term and q are the factors of leading coefficient.

For the given polynomial x^4 + 22x^2 – 16x – 12, we have constant term -12 and leading coefficent is the coefficent of x^4, that is 1.

So, the factors of -12 would be ±1,±2,±3,±4,±6 and ±12.

And factors of 1 is just ±1.

Therefore, ±1, ±2, ±3, ±4, ±6, ±12 would be it's potential roots.

<u>In the given options, we can see ±6 ±1 ±3 are potential roots of the function.</u>

Mariana [72]3 years ago
3 0

Answer:

The potential roots of the function are ±6, ±1, ±3. The options 1, 2 and 3 are correct.

Step-by-step explanation:

The given function is

p(x)=x^2+22x^2-16x-12

According to the rational root theorem, all the possible roots of the function are in the form of

x=\pm \frac{\text{Factors of constant term}}{\text{Factors of leading coefficient}}

In the given function constant term is -12 and the leading coefficient is 1.

Factors of -12 are ±1, ±2, ±3, ±4, ±6, ±12.

The factors of 1 are ±1.

By using rational root theorem, the potential roots of the function are ±1, ±2, ±3, ±4, ±6, ±12.

Therefore the options 1, 2 and 3 are correct.

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A bag contains purple marbles and blue marbles, 41 in total. The number of purple marbles is 4 less than 2 times the number of b
Andreas93 [3]

Answer:

There are 26 purple marbles in the bag.

Step-by-step explanation:

1) We have purple (p) and blue (b) marbles in a bag, and 41 marbles total so:

p+b = 41

2) we want to know how many purple marbles we have, so let's rearrange for p:

p = 41 - b

3) Our problem gives us an expression for the purple marbles in terms of the blue,  let's write it using math symbols instead of words:

<em>"The number of purple marbles is 4 less than 2 times the number of blue marbles."</em>

so: p = 2b - 4

3) Now we're going to plug this in (or substitute it) for our p in our first equation, and solve for b

p = 41 - b

2b - 4 = 41 - b     (substitution)

2b = 45 - b         ( add 4 to both sides)

3b = 45               (add b to both sides)

b = 15                  (divide both sides by 3)

4, last step!)

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