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Across
  1. 2. (4^2+(12÷4+2^2))-2^2
  2. 3. ((15-2)+(15÷5)^2)+5^2
  3. 4. (15÷5)^2+((18+7)x6^2)
  4. 6. ((3+5)^2x7)-13-2^2
  5. 8. ((9+3)-(12÷6)^2)+2^2
  6. 10. (72+(16÷4+3^2))+5^3
  7. 12. ((9-3)+(20÷10)^2)+15^3
  8. 15. (4^2+(16÷2+3^2))+12^3
  9. 16. 4+(6+(11-2)^2)-5
Down
  1. 1. ((12+3)-(18÷6)^2)+3^5
  2. 2. ((6+5)^2+6)+11-2^2
  3. 4. ((5+2)^2+4)-11+7^2
  4. 5. (6^2+(2^4÷2^3+2^2))+4^2
  5. 7. (16÷8)^2+((17+7)x4^2)
  6. 9. ((3+2)^2+3)+14^3
  7. 10. 9+(5x(9-4)^2)+7
  8. 11. 10+(6+(10-3)^2)+2^3
  9. 13. (14÷7)^2 + ((13+6)x4^2)
  10. 14. 15+(8+(3+3)^2)-9
  11. 17. (10÷5)^2+((14+6)+6^2)