please solve all the questions of this chapter
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(I)2x2/5-x-3/5=0
2x2-5x-3=0
________
5
2x2-5x-3=0
3•(I)4/x-3=2/2x+3;x is not equal to 0;-3/2
4/x=2/2x+3 +3
4/x=2+3(2x+3)
________
2x+3
4(2x+3)={2+6x+9}x
8x+12=2x+6x2+9x
6x2+x-12=0
2x2-5x-3=0
________
5
2x2-5x-3=0
3•(I)4/x-3=2/2x+3;x is not equal to 0;-3/2
4/x=2/2x+3 +3
4/x=2+3(2x+3)
________
2x+3
4(2x+3)={2+6x+9}x
8x+12=2x+6x2+9x
6x2+x-12=0
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