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10 questions from this quiz
2n2n2n
2n+12n + 12n+1
nnn, n+1n + 1n+1, n+2n + 2n+2
Equal for all possible values
Only one
Always odd
Rearrange to show equality
Work for all possible values
Look for likely failure cases
52−42=95² - 4² = 952−42=9
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