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Forma restrânsă a expresiei 9x²-24xy+16y²

Răspuns :

9x²+24xy+16y²=(3x+4y)²
(3x+4y)²≠(3x+4y)(3x-4y)
(3x+4y)²=(3x+4y)(3x+4y)


Ma intreb daca e corect hmmm......