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Using the given pattern, find the missing numbers.
1$^2$ + 2$^2$ + 2$^2$ = 3$^2$
2$^2$ + 3$^2$ + 6$^2$ = 7$^2$
3$^2$ + 4$^2$ + 12$^2$ = 13$^2$
4$^2$ + 5$^2$ + _$^2$ = 21$^2$
5$^2$ + _$^2$ + 30$^2$ = 31$^2$
 Answers: 4
  on 8/11/16
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