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Example: (4)
Find in R the S.S of each of the following inequalities:
1) ?? - ?? = ???? - ??
?? – 3 ?? = -5 + 2
-???? = -3 s.s = { X : X ? R ?? = ?? }
?? ??
?? = ??
2) 2?? + 1 > 4?? - 3 > 2?? - 11 ???? - ???? > -???? + ??
???? - ???? > -?? - 1
-???? > -4 ???? > -8
?? < 2 ?? > -4
3) ?? - 1 < 3?? - 3 = ?? + 5 ???? - ?? > ?? + ??
?? - ???? > -?? + 1 ???? > 8
-???? > - 2 ?? > 4
?? < 1
1ST TERM MATH-PREP.2
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