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Verified answer
2b]|x/2 + 5| 》9
x/2 + 5 》9
x/2 》9 - 5
x/2 》4
x 》4 × 2
x 》 8
-|x/2 + 5| 》9
|x/2 + 5| 《 9/-1
x/2 + 5 《 -9
x/2 《 -9 - 5
x/2 《 - 14
x 《 -14 × 2
x 《 -28
Jadi HPnya adalah { x《 -28 dan x 》8}
d]
2 < |2 - x/2|《 3
2 < 2 - x/2《 3
2 - 2 < 2 - 2 - x/2《 3 - 2
0 < -x/2《 1
0 × 2 < -x/2 × 2《 1 × 2
0 < -x《 2
0/-1 > x 》2/-1
0 > x 》-2
Jadi HPnya adalah {-2《 x < 0}