Thread: resolving for x

I tried to solve thees but is useless I not doing it right. Can some one lead the way?


1) sqrt(2x + 1) = x-1


2) -2< x+2/x-1

Originally Posted by cristinaivelisse

I tried to solve thees but is useless I not doing it right. Can some one lead the way?


1) sqrt(2x + 1) = x-1


2) -2< x+2/x-1

square both sides ...









check for extraneous solution(s)











critical values are and . these two values of x break up the set of all x-values into three sections . ..

, , and

pick any number in each section ... if it makes the original inequality true, then all values of x in that section will be in the solution set.