Question

Ex 1 va rog e urgent ​

Answer 1

Răspuns:

acolada mare {si faci:x+y+z=0 =>{z+1-6y+z=0

2x- x3=0 2z+2-12y- <=>

4y+4z=-1

x=5y-z=1

{2z-5y=-1 /÷(-3)

6z-16y=-3 =>{-6z+15y=3

6z-16y=-3

________________

/ -y=0=>y=0

2z=-1=>z=-1/2 (1 supra 2); x=-1/2+1-0=>x=1/2