Respostas

  • Usuário do Brainly
2014-05-30T22:11:15-03:00
{[(20:10+9)+5]:4}+2²
{[(2+9)+5]:4}+2²
= {[(11)+5]:4}+2²
= {[16]:4}+2²
= {4}+2²
= 4 + 4
= 8

Ik_Lob
2 4 2
2014-05-30T22:14:44-03:00
{[ (20 ÷ 10 +9) +5]÷ 4} + 2²=
{[ ( 2 +9 ) +5 ] ÷ 4 } + 2²=
{[ 11 +5 ] ÷ 4 } +2²=
{ 16 ÷ 4 }+ 2² =
4 + 4= 8