-2x²-5x+3<0

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-2x²-5x+3<0-2x²-5x+3<0-2x²-5x+3<0(-无穷,-3)U(1/2,+无穷)记得好评

-2x²-5x+3<0
-2x²-5x+3<0

-2x²-5x+3<0
(-无穷,-3)U(1/2,+无穷)记得好评