Question

4 times the square root of the quantity of x plus 2 equals negative 16,

Answer 1

\[4\sqrt{x+2}=-16\]

Answer 2

@SolomonZelman

Answer 3

no solution

Answer 4

http://www.wolframalpha.com/input/?i=4+multiplied+by++square+root+of+x+plus+2+%3D+-16

Answer 5

do u have to simplify it ?

Answer 6

find the solution

Answer 7

are there any answer choices?

Answer 8

x = 14; not extraneous
x = 2; extraneous
x = 2; not extraneous
x = 14; extraneous

Answer 9

oh u want to solve for x

Answer 10

its 14 not extraneous

Answer 11

how do you figure

Answer 12

you divide 4 from both sides, then square both sides, then subtract 2 from both sides

Answer 13

i was thinking it was ext.

Answer 14

ok i ll go step by step with u ok bear with me

Answer 15

first square both side so u dont have to deal with sqrt \[16(x+2)=256\]

Answer 16

sorry it is extraneous because when you plug 14 into the equation it doesnt equal -16 it equals 16

Answer 17

divide both sides by 16 \[x+2=\frac{ 256 }{ 16 }\]

Answer 18

then \[x+2=16\]

Answer 19

\[x=16-2\]

Answer 20

D looks good to me, but continue @ayeshaafzal221 , lets see if you concluded the same answer :)

Answer 21

x=14

Answer 22

so its A

Answer 23

its not extraneous we dont have two solution

Answer 24

as u saw from my steps we only got 14

Answer 25

its D

Answer 26

No its A

Answer 27

dude plug it in to the equation

Answer 28

its extraneous

Answer 29

lol i got D as well

Answer 30

D is correct

Answer 31

no because i squared it

Answer 32

i have a couple other questions if yall are possibly able to help :)

Answer 33

I could try, what grade is this?

Answer 34

oh wait @SchoolHelpPls is right srry about that i was thinking of something else

Answer 35

Simplify (5x3− x + 14) − (3x2− 9x + 4).

5x3− 3x2+ 8x + 10
2x2+ 8x + 10
5x3− 3x2− 10x + 18
2x2− 10x + 18

Answer 36

C

Answer 37

@princesssleelee Put that into a new question. Itʻs not against rules, but it keeps things more organized

@SchoolHelpPls No direct answers

Answer 38

sorry A i misread

Answer 39

http://www.wolframalpha.com/input/?i=%285x3%E2%88%92+x+%2B+14%29+%E2%88%92+%283x2%E2%88%92+9x+%2B+4%29

Answer 40

@SchoolHelpPls Explain your answers, even Wolfram doesnʻt explain...

Answer 41

Its okay, I got A as well honestly i just needed a double check on one so i know that i did the others like it correctly :)

Answer 42

@ShadowLegendX still gives the right answers tho ;) and in adulthood you only use 3% of what you learn in school so who cares. School only cares about your grades anyway

Answer 43

Very true!

Answer 44

9/3-2i

Answer 45

i got 27+18i/13

Answer 46

@SchoolHelpPls but she is not learning anything if u give her straight answers , next time she wont need to ask if she knows how to do it !

Answer 47

@SchoolHelpPls Where did you get that 3% statistic?

Also, on her tests and exams, these direct answers wonʻt get her an A. Good luck on SATs / ACTs ._.

Answer 48

I just passed my ACT!

Answer 49

A lot of Collages don't even require you to take those tests anymore to enter because people are realizing that standardized tests are bs

Answer 50

@SchoolHelpPls Where are you getting this information

Answer 51

So no more help for me? lol
i posted a problem and the answer i got ..... lol

Answer 52

@princesssleelee What of upcoming test and exams? and at college you will need to know this stuff as well. Donʻt just blow it off, it will hurt you in the future, trust me

Answer 53

@ShadowLegendX http://www.fairtest.org/university/optional
http://blog.prepscholar.com/the-complete-guide-to-sat-optional-colleges

simple google search

Answer 54

ok..... soooooo i posted a problem and the answer that i got... could i be told if i got the correct answer or where i may have made an error?

Answer 55

@princesssleelee I'm sorry, I'm not sure how to do the problem, I'm in 10th and haven't seen that yet =/

Answer 56

can you type it on here exactly how it looks on the test?

Answer 57

\[\frac{ 9 }{ 3-2i }\]

Answer 58

i got \[\frac{ 27+18i }{ 13 }\]

Answer 59

Thank you! do you have answer choices also?

Answer 60

a 10th grader thinks itʻs best to judge a person on what he/she should know for the future...

Answer 61

You are correct @princesssleelee

Answer 62

it cannot be simplified anymore, correct?

Answer 63

I can't see how if it can be. I'm 99% sure the answer you have is correct

Answer 64

EVERYTHING you gave me/worked with me on were perfect! i got one wrong on the entire thing..... a 97% but i did that one on my own thinking it was right, should of had you check it ;) lol thank you very much! it was greatly appreciated, i know how to do every problem because of you! even with the answer, i still worked out the problem the right way! and found where i was wrong when i didnt!

Answer 65

You're very welcome! Good luck in the future and Happy Holidays! :)

Answer 66

To you as well! I hope youre on often, however i have until january 26th to finish this class lol!