CTET 2 Math and Science 5 Jan 2022 Paper

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Question : 38 of 150

Marks: +1, -0

The sum of x² + y², y² + z², z² + x² and 4xy + 4yz + 4zx is equal to

(x + y + z)²
4(x + y + z)2
2(x + y + z)2
4(x + $\;{y}/{2}$ + z)2

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