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Mathematics, 25.09.2019 16:00 marendt2014

1. prove that for any natural value of n the value of the expression:
a) (n+1)^2–(n–1)^2 is divisible by 4
b) (2n+3)^2–(2n–1)^2 is divisible by 8

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1. prove that for any natural value of n the value of the expression:
a) (n+1)^2–(n–1)^2 is d...
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