Solve the inequality 2x + 1 < (3x + 2)/x + 2

View previous topic View next topic Go down

avatar
Admin
Administrator
Administrator
Posts Posts : 180
View user profile

PostAdmin on 26th June 2016, 7:28 am

2x + 1 < (3x + 2)/x + 2

solutio:

we remove bracket
(2x + 1) < (3x +2)/x +2
=(2x + 1)(x + 2)< (3x +2)
=2x^2+5x+2< 3x+2
CLT
=2x^2 +2x>0


Last edited by Paradise on 26th June 2016, 12:11 pm; edited 1 time in total


MathsBoard Forum Admin

You can avoid reality, but you cannot avoid the consequences of avoiding reality.
avatar
Geaty
Member
Member
Posts Posts : 36
View user profile

PostGeaty on 26th June 2016, 11:44 am

2x+1<(3x+2)/x+2

firstly finding the L.C.M
and the L.C.M is x+2

therefore
2x+1(x+2)<3x+2

open the bracket
2x2 + 4x + x + 2 < 3x + 2

collect like terms
=2x2 + 4x + x - 3x < 2-2
=2x2 + 2x < 0
=2(x2 + x) < 0
avatar
Geaty
Member
Member
Posts Posts : 36
View user profile

PostGeaty on 26th June 2016, 11:46 am

@Paradise u are wrong
Sponsored content

PostSponsored content

View previous topic View next topic Back to top



Create an account or log in to leave a reply

You need to be a member in order to leave a reply.

Create an account

Join our community by creating a new account. It's easy!


Create a new account

Log in

Already have an account? No problem, log in here.


Log in

New topics in same category


    Permissions in this forum:
    You cannot reply to topics in this forum