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yKpoI14uk [10]
3 years ago
8

Find all rational zeros of the polynomial

Mathematics
1 answer:
rjkz [21]3 years ago
4 0

x^3+x^2-5x+3=x^3+3x^2-2x^2-6x+x+3\\\\=(x^3-2x^2+x)+(3x^2-6x+3)=x(x^2-2x+1)+3(x^2-2x+1)\\\\=(x^2-2x+1)(x+3)=\underbrace{(x^2-2(x)(1)+1^2)}_{(a-b)^2=a^2-2ab+b^2}(x+3)=(x-1)^2(x+3)\\\\P(x)=0\iff(x-1)^2(x+3)=0\iff(x-1)^2=0\ \vee\ (x+3)=0\\\\x-1=0\ \vee\ x-1=0 \vee\ x+3=0\\\\x=1\ \vee\ x=1\ \vee\ x=-3\\\\Answer:\ \boxed{x_1=1,\ x_2=1,\ x_3=3}

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Find the slope between the two given points.
monitta

Answer:

Slope is y2-y1/x2-x1

Let’s make the point (-3,18) our x1 and y1 and make the point (12,-15) our x2 and y2.

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Hope I helped!

8 0
3 years ago
PLEAS PLEASE PLEASE HELP!!
jekas [21]

Using the given functions, it is found that:

  • Lower total cost at Jump-n-Play: 40, 64.
  • Lower total cost at Bounce house: 28, 8, 30.
  • Same total cost at both locations: 32.

<h3>What are the cost functions?</h3>

For n visits to Jump-n-play, the cost is:

J(n) = 189 + 3n.

For n visits to Bounce Word, the cost is:

B(n) = 125 + 5n.

Comparing them, we have that:

J(n) < B(n)

189 + 3n < 125 + 5n

64 < 2n

n > 32

Hence:

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  • For more than 32 visits, the cost at Jump-n-play is lower.

Hence:

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  • Lower total cost at Bounce house: 28, 8, 30.
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More can be learned about functions at brainly.com/question/25537936

4 0
2 years ago
If 72° is used ti represent 4 people. How many people were there altogether?
frozen [14]

Is there any possibility that you're looking at a pie-chart and not
sharing it with us ?

Let's see.  If 72° represent 4 people, then each person is (72°/4) = 18° .
But then they would all freeze and get sick. No, that can't be it.  It must
be the other kind of degrees ... the kind in circles and angles.

OK.  If 72° represent 4 people, then each person is (72°/4) = 18° .
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Well, there are always 360° in one full circle.  And each person
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       (360°) / (18°)  =  20 times.

So 20 people exactly fit into one whole circle.

Does the question have anything to do with that ?


4 0
4 years ago
Evaluate the expression (65+(1/5•5)+6) divided by 9
Sergio039 [100]

(65+(1/5•5)+6)÷9

=(71+1)÷9

=72÷9

=8

5 0
3 years ago
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Answer:

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Step-by-step explanation:

8 0
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