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L E F [* 1 5 8 6 8 8 \\Q%#L 532  7 2 ?− >x 7 ? 2x ⇔ > + 7 Fx⇔ > ⇔  x > 4.E? _>=()* +,% x >   4.7? ( 3 7 3 3 7 2 x x− + − ≤ 2 3 L  3⇔ − − ≤ +x x 2 2 L   ⇔ − − ≤ + x x 2   2 L⇔ − ≤ + +x x 32 ⇔ − ≤ x ⇔  32≥ −x 4.E? _>=()* +,% 32≥ −x  4.7?  3 2 4 1 4 3 3 x x x− − + > − `' ^ 3 577.?  4x ≥ ? 4x ⇔ > ? ?x x⇒ = ' ? ? L ?A x x x= + + = + 4.? (aJb# 7 4 7x x − ≥ ⇔ ≥ , 7 7x x− = − c* 7 7 Ex x− + = 7 E 7 2 @ 2 x x x x ⇔ + = + ⇔ = ⇔ = 3 aJb# 7 4 7x x− < ⇔ <  , 7 7x x− = − c* 7 7 Ex x − + = 7 E 7x x⇔ − + = − ?x ⇔ = G[ _>d<e2f 3 52X' ^ 4.? (TM K)Đ 0 4 ( 0-13 . 8 D I$ J=()* +, ? 2 2 @x x + ≤ + % 1 2x ≥ 5 2x ≥ 6 2x ≤ 8 2x ≤ − J$ H:%'K 1  2 ? 2− + ≤ 5 L 7 2≤ − 6  2 E   E− + < − + 8 343. Q $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ 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