True and False with A Difference of Two Squares Dilemma
Question in Image Below Solution 22) Fact Perfect Squares can only have last digits 0, 1, 4, 5, 6, 9 Perfect Square CANNOT have these last digits: 2, 3, 7, 8 If (i) and (ii) were true, a number with last digit 2 is a perfect square, impossible!...
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