Do constraints need to be binding for KKT conditions

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I am testing that the point (1,0) satisfies KKT conditions for the following problem:

min (x1 − 2)^2+ 2(x2 − 1)^2

subject to

x1 + 4x2 ≤ 3

−x1 ≥ x2

Does it matter if the constraints are binding or not? Thank you