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denis23 [38]
4 years ago
12

Find the sum.

Mathematics
1 answer:
Irina18 [472]4 years ago
7 0

Step-by-step explanation:

4x2 + 5x - 7 + 3 - 2x2 + 6x

Solving like terms

2x2 + 11x - 4

Option C is the correct answer

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Which of the following represents the zeros of f(x) = 3x^3 − 10x^2 − 81x + 28?
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Option A). 7, -4 and 1/3

To find the zeros you can factor the polynolial into (3x-1)((x+4)(x-7)

Then:
3x -1 =0 => x = 1/3
x+4=0 => x = -4
x-7 =0 => x =7

Those are the three zeros.

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Answer:

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Step-by-step explanation:

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3 years ago
Solve for x. Answer with Interval Notation. <br><br> x^2+5x&lt;24
serg [7]

Answer:

Look for a pair of factors of  

24

whose difference is  

5  .  24 =  8  ×  3  and  5  =  8  −  3  So  x  2  +  5  x  −  24  =  x  2  +  (  8  −  3 )  x  − ( 8 × 3 )  =  ( x  +  8 )  ( x  −  3 )

So the solutions of  x  2  +  5 x  − 24 = 0  are  x  =  − 8 and  x  =  3

Step-by-step explanation:

3 0
3 years ago
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