Respostas

  • Usuário do Brainly
2014-08-26T14:47:05-03:00
A=( \frac{3}{4} ) ^{2}.(-2) ^{3}  +(- \frac{1}{2}) ^{1}

 \frac{9}{16} .(-8)+(- \frac{1}{2} )

cancela 8 com 16 e multiplica

A=-  \frac{9}{2} - \frac{1}{2} =- \frac{10}{2} =-5
2014-08-26T14:49:10-03:00
A=(3/4)ELEVADO AO QUADRADOX(-2)ELEVADO AO CUBO(1/2)ELEVADO A 1 A=(9/16)X(-8)+(-1/2) A=-72/16-8 A=-72-7 A=-80