Question

a) x(x-4)+4+(y-x+1)(y + x) = y(y-6)+10
(x + y + 3)(x - y - 2)=(x + y)(x - y)
b) (x(x+2)+1+ y(2- y) = (x + y + 1)(x - y + 2) +1 9+ (x+y-3)(x - y + 5) = (x - y)(x + y)

Rezolva ecuațiile. AJUTOR!!!​

Answer 1

Răspuns:

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