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Question:

The distance of P(a,b) from the origin is

|a−b|

a² + b²

√a² + b²

|a+b|

Solution:

Let P(a,b) be any point in the plane. The distance of P(a,b) from the origin i.e., (0,0) is given by √(a−0)² + (b−0)² = √a² + b². Hence, option C is correct.