Question

Cum se rezolva problema 26?

Answer 1

Rezolvare:

xy= z^2+2+z(x-y)

xy - {[(z^2) + 2)]+ z • (x - y)} = 0

xy - xz + yz - z^2 - 2 = 0

xy - xz + yz - z^2 - 2 = |x+y|

xy-xz+yz-z^2-2= 0|+2

xy-xz+yz-z^2= |x+y|. }

xy - xz + yz- z^2= x+y}=> x+y=2