If
2 + y2 + z2
= 12 and x + y + z = 0 , find the value of xy + yz + zx
Answers
Answered by
0
Answer:
therefore x=2, y=2, z=2..
Answered by
0
Step-by-step explanation:
2y+2z=10
y+z=5
in 2nd equation
x+y+z=0
y+z=-x
put it in above equations
so,
-x=5
x=-5
and the value of xy+yz+zx is depend on the value you take of y and z value of yand z is not predictable bcuz in one eq. only y & z is present and in other x y & z are present
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