Home
Class 12
MATHS
Solve the following: |x-2|=1 (ii) 2|x+1|...

Solve the following: `|x-2|=1` (ii) `2|x+1|^2-|x+1|=3`

Text Solution

Verified by Experts

(i) |x-2| =1 I,e those points on real number line which are at distance 1 untis from 2 .
As shown in the figure x=1 and x=3 are at distane 1 untis from 2.
As shown in the figure x=1 and x=3 are at distance 1 unit from2 ltbr. Hence , x=1 or x =3 Also |x-2 |=1
`rArr x-2 = pm 1`
`rArr x=1 or x=3`
(ii) `2 |x+1|^2-|x+1|=3`
`rArr " "2|x+1|^2-|x+1|=3`
`rArr " " 2| x+1|^2-3|x+1|+2|x+1|-3=0`
`rArr " "(2|x+1|-3|x+1|+1)=0`
`rArr " "2|x+1| -3 = 0 `
`rArr " "|x+1|=3//2`
`rArr " " x+1 = pm 3//2`
`rArr x=1//2 or x = -5//2`
Promotional Banner

Topper's Solved these Questions

  • SET THEORY AND REAL NUMBER SYSTEM

    CENGAGE|Exercise Exercise 1.1|12 Videos
  • SET THEORY AND REAL NUMBER SYSTEM

    CENGAGE|Exercise Exercise 1.2|8 Videos
  • SEQUENCE AND SERIES

    CENGAGE|Exercise Question Bank|36 Videos
  • SETS AND RELATIONS

    CENGAGE|Exercise Question Bank|15 Videos

Similar Questions

Explore conceptually related problems

Solve the following 1<=|x-2|<=3

Solve the following: (2x-1)/5=(3x+1)/3

Solve the following: (2x-3)/(4x+5)=1/3

solve the following : x/2-1/4=x/3+4/2

Solve the following equations: 2^(x-5)=256 (ii) 2^(x+3)=4^(x-1)

Solve the following equation: (|x-2|)/(x-3)=1/(x-3)

Solve the following |(x^(2)-1)+(x^(2)-4)|<=3

Solve the following: x/2-1/4(x-1/3)=1/6(x+1)+1/12

Solve the following inequalities: |1+(3)/(x)|>2

Solve the following: 1/2(x+1)+1/3(x-1)=5/12(x-2)