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[tex](2x +3) {}^{2} - 2(x - 3)(x + 3) + (x - 6)(x + 6) - (2x - 1) {}^{2} [/tex]
Va rog frumos! ​


Tex2x 3 2 2x 3x 3 X 6x 6 2x 1 2 TexVa Rog Frumos class=