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Replies to This Discussion

ok so the answer should be 

-1 < x < - 5 ?

no this -1<x>-5

ok tell me how can u change the ineuality sign with -5?

it mean apne ye kaise kiya x<-5

dekhiye ap ne jo kaha k 2<x+3>-2 mujhe theek nhi lag raha ap lesson 2 ki example check kro table 1.2.2(b) k baad ki

 wo example hai

|x-3|<4

-4<x+3<4

-1<x<7

Ji mene to isi method se kia he..

apka ek sign < or dosra > he, jub k mere khiyal me dono < or < hone chahye...

ap chahein toh lesson 2 mein check kr skte hain examples se n jonsi website maine batai thi wahan b signs change tabi hote hain jb multiply ya divide ho raha ho but yahan nhi ho raha

2<x+3>-2

stractract whole by -3

-1<x>-5

ye 1 example hai lesson to mein jo maine neeche di hai

|x+4|>=2

it is done by the alternate way

x+4<=-2                                        x+4>=2

x<=-6                                             x>=-2

now according to ur method

-2>=x+4>=2

subtract whole by -4

-6>=x>=-2

 

Ok lakin me Expansion k tariqay ki baat kar raha hun

App ne aisay ki hye

2<x+3>-2

Jub k mere khayal me aisay he

2<x=3<-2

please reply here...

Ok lakin me Expansion k tariqay ki baat kar raha hun
App ne aisay ki hye
2<x+3>-2
Jub k mere khayal me aisay he
2<x=3<-2

jb hum expand krte hain tab inequality ka sign change hota hai positive k  sath wohi sign rehta hai negative k sath change hota hai when u expand

 

lakin is link pe http://www.purplemath.com/modules/absineq.htm

jo method bataya he us me to aisa nai hota, sign change nai hota in any case.

agar app dekhna chahte hain ke sign change hota he ya nahi to uski example

handouts mein hi hae page no.21

first example on this page |x+4|>=2

when expand

x+4<=-2     or      x=4>=2

checkout here www.mathway.com also

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