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For all numbers m and n, $$m?n=(2m-n)(m+n).$$ If m = 3 and n = 4, then n?m =
A. 35
B. 14
C. 7
D. −7
E. −14
[spoiler]OA=A[/spoiler]
Source: Princeton Review
A. 35
B. 14
C. 7
D. −7
E. −14
[spoiler]OA=A[/spoiler]
Source: Princeton Review
