Question

A= (3/4)².(-2)³+(-1/2)¹

como resolver?

Answer 1

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=$- \frac{9}{2} - \frac{1}{2} =- \frac{10}{2} =-5$

Answer 2

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