👤

[tex](2x-y-3)^{2} + (3x+z+4)^{2} = ?[/tex]

Răspuns :

(2x-y-3)²+(3x+z+4)²=(2x-y-3+3x+z+4)(2x-y-3-3x-z-4)=(5x-y+1+z)(-x-y-7-z)