Logowanie
Zapisz w postaci iloczynu 4-x^2+2xy-y^2
Matematyka
różnica-kwadratów
nowag
2018-05-07 11:57:44 UTC
#1
Zapisz w postaci iloczynu
4-x^2+2xy-y^2
gosiabor
2018-05-07 12:03:46 UTC
#2
4-x^2+2xy-y^2=
=2^2-(x-y)^2=[2-(x-y)][2+(x-y)]