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simplificati raportul algebric 9x la patrat+12xy+4y la patrat supra 21xy+14 y la patrat cu 2y+3x

Răspuns :

(9x^2+12xy + 4y^2) / (21xy + 14y) = (3x+2y)^2 / 7y(3x+2y) = (3x + 2y) / 7y