Which of the equations are true identities?
A. n(n − 2)(n + 2) = n^3 – 4n
B. (x+1)^2- 2x...
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Mathematics, 06.05.2020 05:23 nani97
Which of the equations are true identities?
A. n(n − 2)(n + 2) = n^3 – 4n
B. (x+1)^2- 2x+y^2=x^2+y^2+1
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