83*84 what will be the trick

  1. profile image45
    shruti_keshriposted 7 years ago

    83*84 what will be the trick

  2. profile image55
    mathman32503posted 7 years ago

    You could treat each number as a binomial and use the FOIL method:

    (80+3)(80+4)

    = 80*80+80*4+80*3+3*4

    = 6400+320+240+12

    = 6972

  3. profile image48
    rampaaaposted 7 years ago

    https://usercontent1.hubstatic.com/4387154_f260.jpg

    hi do it in the above way

 
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