Respostas

  • Usuário do Brainly
2014-07-29T16:24:18-03:00
A^2 -b^2 =(a+ b).(a - b)                            2^5=32
(2^5)^2 -10^2 =(2^5 +10)(2^5 -10) =(32 +10).(32 -10) =42 .22
esta provado