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motikmotik
3 years ago
5

Find the sum 3n/ n^2 +4n+4 + 7/n^2+6n+8

Mathematics
2 answers:
Marianna [84]3 years ago
7 0

Answer:

1=1=1=1=1=1=1=1=1=1=1=1=1=1=1=1=1=1=1=1=1=1-1=0

Step-by-step explanation:

nasty-shy [4]3 years ago
6 0

Answer:

3n

6

15n

8

−3n

7

−6n

6

+3n

4

−1

Step-by-step explanation:

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Please help!? 5 Stars! :0 :(
zvonat [6]

OK.  These problems are easy if you know the quadratic formula,
and they're impossible if you don't.

Here's the quadratic formula:

When the equation is in the form of      Ax² + Bx + C = 0

then                    x =  [ -B plus or minus √(B²-4AC) ] / 2A

I'm sure that formula is in your text or your study notes,
right before these questions.  You should cut it out or
copy it, and tape it inside the cover of your notebook.
Then, you'll always have it when you need it, until
you have it memorized and can rattle it off.

The first question says        3x²  +  5x  +  2  = 0

Is this in the form of             Ax²  +  Bx  +  C  = 0    ?

             Yes !                    A=3      B=5   C=2

             so you can use the quadratic formula to solve it.

            x =  [ -B plus or minus √(B²-4AC) ] / 2A

               =  [ -5 plus or minus √(5² - 4·3·2) ] / 2·3

               =  [ -5 plus or minus √(25 - 24)  ]  /  6

               =  [  -5 plus or minus  √1          ]  /  6

           x  =        -4 / 6  =  -2/3
and
           x  =        -6 / 6  =  -1 .    
_______________________________________

The second question says

                                         4x²  +  5x  -  1 = 0

Is this in the form of          Ax²  +  Bx + C = 0  ?

           Yes it is !            A=4     B=5   C= -1  

         so you can use the quadratic formula to solve it.

            x =  [ -B plus or minus √(B²-4AC) ] / 2A

Now, you take it from here.

6 0
3 years ago
How many solutions are there to the quadratic equation
Ray Of Light [21]

Answer:

2

Step-by-step explanation:

(-7)^2  -  4*3 *(-2) =   49 + 24  >0

discriminant is positive so 2 real roots

8 0
3 years ago
You are going to play a game where you bet a dollar and get to flip a coin ten times. If you get four heads in a row, you win. I
MrMuchimi
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3 0
3 years ago
1.15 + m = 10 Please give an answer
garik1379 [7]

Answer:

M = 8.85

Step-by-step explanation:

10 - 1.15 = 8.85

8 0
2 years ago
Explain why a three-dimensional figure with a curved surface is not a polyhedron
max2010maxim [7]
Hope this can help explain better got you. :)

5 0
3 years ago
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