Question

Can someone tell me if I got these right??


Question 4 (Multiple Choice Worth 1 points)

Simplify completely quantity 8 x minus 56 over quantity x squared minus 49 divided by quantity x minus 6 over quantity x squared plus 11 x plus 28

4 open parentheses x plus 4 close parentheses over quantity x minus 3

8 open parentheses x plus 2 close parentheses over quantity x minus 3

8 open parentheses x plus 4 close parentheses over quantity x minus 7

8 open parentheses x plus 4 close parentheses over quantity x minus 6


I picked A.

Answer 1

Simplify completely quantity 6 x squared minus 54 plus 84 over quantity 8 x squared minus 40 x plus 48 divided by quantity x squared plus x minus 56 over quantity 2 x squared plus 12 x minus 32

2 open parentheses x minus 3 close parentheses over 3 open parentheses x minus 2 close parentheses

2 open parentheses x minus 2 close parentheses over 3 open parentheses x minus 3 close parentheses

3 open parentheses x minus 3 close parentheses over 2 open parentheses x minus 2 close parentheses

3 open parentheses x minus 2 close parentheses over 2 open parentheses x minus 3 close parentheses

I picked C

Answer 2

Simplify completely quantity x squared minus 4 x plus 4 over quantity x squared plus 10 x plus 25 times quantity x plus 5 over quantity x squared plus 3 x minus 10

quantity x minus 2 over quantity x plus 5

x minus 2 all over the quantity x plus 5 end quantity squared

the quantity x minus 2end quantity squared all over x plus 5


I picked B

Answer 3

Posting one at a time will make people more likely to help.

Answer 4

Sorry, oh.

Answer 5

how?

Answer 6

@Jhannybean where are you smartypants? >.<

Answer 7

the "@ " symbol

Answer 8

oh..

Answer 9

Ex: @Luigi0210

Answer 10

I seee now,

Answer 11

Yes?

Answer 12

?

Answer 13

lets start with the first question

Answer 14

okay

Answer 15

Well, @dreamer05 you're in good hands now. Time to hit the old trail. Good luck!

Answer 16

thanks

Answer 17

Simplify completely quantity 8 x minus 56 over quantity x squared minus 49 divided by quantity x minus 6 over quantity x squared plus 11 x plus 28

(8x - 56)/ (x^2 -49) / (x-6)/(x^2 +11x +28)

We can rewrite this as \[\large \frac{8x-56}{x^2-49} \cdot \frac{x^2+11x+28}{x-6}\]

Answer 18

Ok.

Answer 19

Now factor and simplify!

Answer 20

I did, that's why I am not sure if I got them right.. I'm not so good when it comes to fractions, that's why I wanna see if I got them right, and if I didn't i wanted it explained to me.

Answer 21

\[\large \frac{8\color{green}{(x-7)}}{\large \color{green}{(x-7)}\color{red}{(x+7)}}\cdot \frac{\color{red}{(x+7)}(x+4)}{x-6}\]

Answer 22

Now what can we cancel out here?

Answer 23

the red? so the x+7?

Answer 24

When Jhanny's here.. an explanation is unavoidable >.>

Answer 25

And what else? :)

Answer 26

Youre on the right track.

Answer 27

& the x-7

Answer 28

good job. \[\large \frac{8\color{green}{\cancel{(x-7)}}}{\large \color{green}{\cancel{(x-7)}}\color{red}{\cancel{(x+7)}}}\cdot \frac{\color{red}{\cancel{(x+7)}}(x+4)}{x-6}\]

Answer 29

so its 8 x (x+4) over x-6

Answer 30

Re simplify by taking out all the stuff we've canceled. What are you left with?

Answer 31

Yay! :)

Answer 32

so thats one?

Answer 33

a. 4 open parentheses x plus 4 close parentheses over quantity x minus 3

b. 8 open parentheses x plus 2 close parentheses over quantity x minus 3

c. 8 open parentheses x plus 4 close parentheses over quantity x minus 7

d. 8 open parentheses x plus 4 close parentheses over quantity x minus 6

Answer 34

So which one seems like the right choice?

Answer 35

The last one

Answer 36

Good job.

Answer 37

(:

Answer 38

Can you try the next one?

Answer 39

I'll try.

Answer 40

break down the sentence into parts.Ask yourself, "how would i write 6 x squared minus 54 plus 84"?

Answer 41

combine like terms?

Answer 42

Mmhmm, Most definitely.

Answer 43

14x -94+132?

I don't think that's right.

Answer 44

I'll write up the problem for you, the rest of it will be up to you! Just follow the same techniques we used in the last problem, alrighty? :)

Answer 45

Okay c:

Answer 46

6 x squared minus 54 plus 84 over quantity 8 x squared minus 40 x plus 48 divided by quantity x squared plus x minus 56 over quantity 2 x squared plus 12 x minus 32

\[\large \frac{6x^2 -54 +84}{8x^2 -40x + 48}\cdot \frac{2x^2+12x-32}{x^2+x-56}\]

Answer 47

8x^2 -54+12x+52
-----------------
9x^2-39x-8

Answer 48

17x^2-27x-10

Answer 49

So is it A?

Answer 50

@Jhannybean ?

Answer 51

\[\large \frac{6x^2 -54 +84}{8x^2 -40x + 48}\cdot \frac{2x^2+12x-32}{x^2+x-56}\]\[\large\frac{6(x^2-9x+16)}{8(x^2-5x+6)}\cdot \frac{2(x^2+6x-16)}{(x+8)(x-7)}\] Hope you can do the rest!

I'm headed off OS now. Goodnight!

Answer 52

Mkai night.

Answer 53

Goodnight Jhanny!

Answer 54

@dreamer05 did you finish the question?

Answer 55

Yes, I only got that one wrong. I was able to get the rest right. Thanks. (:

Answer 56

So all your questions got answer?

Answer 57

Yes they did. Thank you.

Answer 58

Awesome!
And pfft, thanks Jhanny not me. :P

Answer 59

(:

Answer 60

If you ever need anything just call us(Jhanny) up! :D
Have a good rest of the day. :)

Answer 61

You mean night, it's bed time for me lol but you too dear.