Page 51 - E booklet prep 2_Neat
P. 51
Example: (3)
Find in R the S.S of each of the following inequalities,
and then represent the solution on the number line.
1) -3 < 2?? - 1 = 5 2) 3< 3 - 5 ?? < 13 3) -16 < 5?? + 4 = 4
Solution:
1- 3 + 1< ???? = ?? + ??
4 < ???? = ??
2 < ?? = ?? s.s = { X : X ? R , 2 < ?? = ?? }
2- ?? - ?? < -?? ?? < ???? - ??
?? < -?? ?? < ????
0 >x >-2 s.s = { X : X ? R , 0 > x > - 2 }
3- -16 - 4 < ???? = ?? -4
-20 < ???? = ??
-4 < ?? = ?? s.s = { X : X ? R , -4 < ?? = ?? }
1ST TERM MATH-PREP.2
51 | P a g e
