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equacions de 2n grau (dbb)
Contributed by: Bosch
__1. (3/2)x2=x/2+1A. x1=1 ; x2=2
__2. 2x(x-3)+4=0B. x1=-2 ; x2=3
__3. 2x2+2x-6=3x+x2C. x1=-4 ; x2=2
__4. 5x2-2x-7=0D. x1=1 ; x2=-1
__5. 6x+5 = -x2E. x1=0 ; x2=1/2
__6. 6x2-3x=0F. x1=7/5 ; x2=-1
__7. 9x2+12x+4=0G. x1=-1 ; x2=-5
__8. x2+4x=6+2xH. x1=-2/3 ; x2=-2/3
__9. x2-1 = 0I. x1=1 ; x2=-2/3
__10. x2-3x-3 = 0J. x1=2 ; x2=1
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