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Let a,b,c, be any real number. Suppose t...

Let a,b,c, be any real number. Suppose that there are real numbers x,y,z not all zero such that x=cy+bz,y=az+cx and z=bx+ay. Then
`a^(2)+b^(2)+c^(2)` +2abc is equal to

A

1

B

2

C

`-1`

D

0

Text Solution

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The correct Answer is:
A
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