If x + y + z = 5, x2 + y2 + z2 = 21 and y2 = zx, then the value of y i – McqOptions

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1.	If x + y + z = 5, x2 + y2 + z2 = 21 and y2 = zx, then the value of y is:
A.	1/5
B.	2/5
C.	1/2
D.	1/4
Answer» C. 1/2

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