hba
If x^2-36>0,what are the possible values of x ?
Delete
Share
This Question is Closed
hba
Best Response
You've already chosen the best response.
0
x^2>36
\[x \ge \pm6\]
hba
Best Response
You've already chosen the best response.
0
Options provided,
A) x > 6
B) x < 6
C) x > -6
D) x <-6 or x >6
hba
Best Response
You've already chosen the best response.
0
@Rosh007 Yes ?
hba
Best Response
You've already chosen the best response.
0
@Rosh007 Please help !
hba
Best Response
You've already chosen the best response.
0
So x > +- 6
Otonashi
Best Response
You've already chosen the best response.
0
D
Rosh007
Best Response
You've already chosen the best response.
1
mmmm... I am not sure about how it comes.. since it is inequality... have to refresh.. my memory...
hba
Best Response
You've already chosen the best response.
0
@nubeer Please help !
tamtoan
Best Response
You've already chosen the best response.
1
if you want to solve, try factor the x^2 - 36 ...and what condition make the product of 2 factors greater than zero ?...try that, you should come out with the right answer
hba
Best Response
You've already chosen the best response.
0
not helpful ^^
tamtoan
Best Response
You've already chosen the best response.
1
solving for you is not the right way to help you understand at all :)
Rosh007
Best Response
You've already chosen the best response.
1
but a method is there.... not by mathematical.. but by anaysis... you will b able to understand
nubeer
Best Response
You've already chosen the best response.
0
hmm honestly.. i dont remmeber how but option is D. u can say its trick the way i rmemeber
when x<+-a then sol is -a<x<a
when x>+-a then sol is x<-a and x>a
hba
Best Response
You've already chosen the best response.
0
@tamtoan I dont need the answer,i dont even care about the answer
Rosh007
Best Response
You've already chosen the best response.
1
it is best suited for inequality
hba
Best Response
You've already chosen the best response.
0
what will i do of the answer lol :D
hba
Best Response
You've already chosen the best response.
0
@Rosh007 Well it is fun to revise things back after 2 years,Rusted brains lol.
tamtoan
Best Response
You've already chosen the best response.
1
did you try factoring x^2 - 36 ?
what are the 2 factors ?
hba
Best Response
You've already chosen the best response.
0
|dw:1353051849999:dw|
Lets talk about the graph which makes me help understanding it.
Rosh007
Best Response
You've already chosen the best response.
1
@ha ha.... :)... by analyais it is a lot simpler... and may able to form mathematics from analysis too ;)
hba
Best Response
You've already chosen the best response.
0
Well i got it x >6 or x < -6
hba
Best Response
You've already chosen the best response.
0
The possible solutions . Thanks alot anyways.
Rosh007
Best Response
You've already chosen the best response.
1
:)
Rosh007
Best Response
You've already chosen the best response.
1
I wish I could give a best response to hba too... :(
hba
Best Response
You've already chosen the best response.
0
@Rosh007 give it to @tamtoan
tamtoan
Best Response
You've already chosen the best response.
1
rosh, (x-6)(x+6) > 0 ....this can only happen when both factors are possitive or both are negative
Rosh007
Best Response
You've already chosen the best response.
1
@hba yup.. I had given....... @tamtoan sure thanks I figured out..... & that is what hba got by analysis