? Prove or disprove: all perfect squares (i.e. squares of integers) are either a multiple of 4

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Prove or disprove: all perfect squares (i.e. squares of integers) are either a multiple of 4 or one more than a multiple of 4. Prove or disprove: all perfect squares (i.e. squares of integers) are either a multiple of 4 or one more than a multiple of 4.

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