anonymous
  • anonymous
Please Help
Mathematics
katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
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anonymous
  • anonymous
OregonDuck
  • OregonDuck
what do you think?

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More answers

anonymous
  • anonymous
i got noooo idea
anonymous
  • anonymous
gimme a sec
anonymous
  • anonymous
its a
anonymous
  • anonymous
What you could always do with these are just plug in the values of x in to the equation a check with these one.
anonymous
  • anonymous
no its not
Sachintha
  • Sachintha
not a
anonymous
  • anonymous
i just used a calculator
anonymous
  • anonymous
It has to be a single number with this
OregonDuck
  • OregonDuck
yes it is c actually
Sachintha
  • Sachintha
Take 45 to the right hand side, divide by 5 and get the square root of it.
anonymous
  • anonymous
uggggh im torn
Sachintha
  • Sachintha
Try to solve it without the use of calculators.
OregonDuck
  • OregonDuck
dang it so close i need 1 more medal
Mahmood786123
  • Mahmood786123
there you go
Mahmood786123
  • Mahmood786123
one medal
OregonDuck
  • OregonDuck
YAY thxs
anonymous
  • anonymous
this is the working they showed me 5x^2 - 45 = 0 1. divide by 5 5(x^2 - 9) = 0 2. It's easy to factor the x^ - 9 polynomial! x^2- 9 = (x+3)(x-3) you can check this with FOIL if you want, but I promise it's right! So, the answer is: 5(x+3)(x-3)=0 x = 3, -3
Vocaloid
  • Vocaloid
but after you take the square root of both sides, doesn't that give you plus/minus root(9)?
Mahmood786123
  • Mahmood786123
yr welcome
Sachintha
  • Sachintha
Yeap. So now you got the answer. :D
anonymous
  • anonymous
thanks guys
OregonDuck
  • OregonDuck
i have a title now
anonymous
  • anonymous
lemme look at the post to see who gets the medal
Mahmood786123
  • Mahmood786123
i dont see the title
OregonDuck
  • OregonDuck
refresh your page
anonymous
  • anonymous
imma just give to my lil bro
Mahmood786123
  • Mahmood786123
I see it now
OregonDuck
  • OregonDuck
yup
Mahmood786123
  • Mahmood786123
ummm...... I didnt help I'm 2 grades under u give it to someonelse
OregonDuck
  • OregonDuck
wait what grade are you in?
Mahmood786123
  • Mahmood786123
6th
Mahmood786123
  • Mahmood786123
I meant i'm 3 grades under him
OregonDuck
  • OregonDuck
same here except i can get 100% on algebra 2 work
Sachintha
  • Sachintha
Then @Mumustar78612 should teach his little bro. ;D
Sachintha
  • Sachintha
@OregonDuck which grade are you in?
Mahmood786123
  • Mahmood786123
actually i'm pretty smart too
OregonDuck
  • OregonDuck
6th
Sachintha
  • Sachintha
Great! :)
Mahmood786123
  • Mahmood786123
my mom sometimes thinks I'm better than him
Sachintha
  • Sachintha
Lot to learn. :0
Mahmood786123
  • Mahmood786123
I said SOMETIMES not all the time
OregonDuck
  • OregonDuck
my dad thinks i am smarter than my 10th grade sister
Mahmood786123
  • Mahmood786123
good for you
OregonDuck
  • OregonDuck
yup
Sachintha
  • Sachintha
@Mahmood786123 I meant since you are in 6th grade there is a lot to learn. I am in my final year in school. :)
Mahmood786123
  • Mahmood786123
Ok if you want to talk to someone message them because other people who clicked on this post are getting notifacations that someone replied in this post and that is considered spam
Sachintha
  • Sachintha
Sorry :D

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