(1+2)×(1+2)=9 (2+5)×(2+5)=49 (1+8)×(1+8)=81 (2+9)×(2+9)=121...
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12+12=9 because (12=1+2=3)and +=× then 3×3=9 29=2+9=11 then 29+29=121
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