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|2x + 1| = 4/2(2)
2x = 2-1(1)
x = 1/2
5) √|4x - 2| <_ √|x+5|
(4x-2)² <_ (x+5)²
16x²-16x + 4 <_ x²+10x +25
15x²-26x-21 <_ 0
(15x-35)(15x+9)
(x-7)(15x+9)
x¹ = 7 x² = -9/15
___+____-____+_____
-9/15 0 7
15.(10)²-26.10-21
1500-260-21
=1.219(+)
karena x lebih kecil dri 0 maka
<-9/15<x<7