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5(x-2)-(3x+2)(x-2) va rog


Răspuns :

5(x-2)-(3x+2)(x-2)
=5x-10-3x²+6x-2x+4
=9x-3x²-6
5(x-2)–(3x+2)(x-2)=5x–10–(3x²–6x+2x–4)=5x–10–3x²+6x–2x+4=8x–14–3x²