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Rezolvati in R ecuatia:
1. (3x-1) la2-4(5x+6)=9(xla2 -x +1)+2
2.(4x-1)(4x+1)-5x=-4(x-4xla2)-7(x+3)
RPDDD ROGGGG


Răspuns :

1)9x²-6x+1-20x-24=9x²-9x+9+2
-17x-34=0
-17x=34
x=-2

2)16x²-1-5x=-4x+16x²-7x-21
6x=-20
x=-20/6
x=-10/3