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x²+2x-xy-2y descompusa in produs de factori va rogg ajutor

Răspuns :

x²+2x-xy-2y=
x·x+2(x-y)-x·y=
2(x-y)+x(x-y)=
(x-y)(2+x)
[tex] x^{2} +2x-xy-2y=xx+2(x-y)-xy=2(x-y)+x(x-y)=[/tex]
[tex]=(x-y)(2+x)[/tex]
Sper ca v-am ajutat, o seara buna!