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Given:
[tex]188\times212[/tex]We know that
[tex]188=200-12\text{ and }212=200+12[/tex][tex]188\times212=(200-12)\times(200+12)[/tex][tex]\text{ Using identity }(a-b)\times(a+b)=a^2-b^2,\text{ where a=200 and b=12.}[/tex][tex]188\times212=200^2-12^2[/tex][tex]188\times212=40000-144[/tex][tex]188\times212=39856[/tex]Hence the answer is 39856.