👤

Rezolvati in R ecuatia:
Xla patrat-9-(x-3)la patrat=0


Răspuns :

x²-9-(x-3)²=0
x²-9-x²+6x-9=0
6x-18=0
6x=18
x=3

X^2-9-X^2-2×3×X+3^2=
X^2-9-X^2-6X+9= - 6X