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[x]=√x^2
[x+5]>[x-2]
(x+5)^2>(x-2)^2
x^2+10x+25>x^2-4x+4
x^2-x^2+10x+4x+25-4>0
14x+21>0
7(2x+3)>0
x=0
atau
2x+3=0
2x=-3
x=-3/2
x=-1 1/2
HP={x >-1 1/2 atau x>0 }
=irisan x={ x>0, x€R}
Demikian semoga membantu dan bermanfaat!