Răspunsuri

2014-10-02T16:48:20+03:00
(3x-2y+√5)²=(3x-2y+√5)(3x-2y+√5)=9x²-6xy+3√5x-6xy+4y²-2√5y+3√5x-2√5y+5=
9x²-12xy+6√5x+4y²-4√5y+5