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Simplificati fractia 12x²-3 supra 4x²-4x+1 prin 2x-1 ,unde x ∈ R\{1 supra 2}

Răspuns :

12x↑2-3=3(4x↑2-1)=3(2x-1)(2x+1)
4x↑2-4x+1=(2x-1)↑2

3(2x-1)(2x+1)/(2x+1)↑2=3(2x+1)/(2x+1)