Algebra
19 Online
OpenStudy (anonymous):
i need help
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
With what?
OpenStudy (anonymous):
OpenStudy (anonymous):
@help123please.
OpenStudy (anonymous):
@electrokid
OpenStudy (anonymous):
Oh, sorry, I don't know how to do that.
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
3x ^2 - 6 = 10 - x ^2 @help123please.
OpenStudy (anonymous):
I don't understand. Sorry.
OpenStudy (raden):
3x^2+11x+6=0
factor out!
(3x+2)(x+2)=0
can u get x ?
OpenStudy (raden):
opps typo. it should like this
(3x+2)(x+3)=0
OpenStudy (anonymous):
x=5/3
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (raden):
to get x, take each factor them make be equal zero
OpenStudy (raden):
3x+2=0
how do u solve this ?
OpenStudy (anonymous):
subtract two
OpenStudy (raden):
yes, then ?
OpenStudy (anonymous):
divide by three
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (raden):
so, what's the value of x ? it just the 1st
OpenStudy (anonymous):
@RadEn
OpenStudy (raden):
hah, did u solve question before ?
OpenStudy (anonymous):
yes but i have to corrected it @RadEn
OpenStudy (raden):
okay, just confirm the answer is the first one {-2/3, -3}
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
i got that i need help with this one
OpenStudy (raden):
which one, the 2nd or the 3rd ? :P
OpenStudy (anonymous):
this
OpenStudy (raden):
(x+4)/4 = x/(x-2)
do cross multiply
(x-2)(x+4) = 4x
simplify!
x^2 + 2x - 8 = 4x
x^2 + 2x - 4x - 8 = 4x - 4x
x^2 - 2x - 8 = 0
factor out!
(x-4)(x+2) = 0
find the zeroes
OpenStudy (anonymous):
4 and -2
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (raden):
correct!
OpenStudy (anonymous):
3x ^2 - 6 = 10 - x ^2
OpenStudy (anonymous):
@RadEn