Question

Ajuda aí por favor estou precisando muito.

Answer 1

a)
   $( \frac{3}{4}) ^{2} .(- 2)^{3} +(- \frac{1}{2} ) ^{1}=$

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

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

b)
   $( \frac{1}{2}) ^{-2} +( \frac{1}{3} ) ^{-1} =$

$4+3=7$

c)
   $-2( \frac{3}{2}) ^{3} + 1^{15} -(-2) ^{1} =$

$-2( \frac{27}{8} )+1-(-2)=$

$- \frac{27}{4} +1+2=$

$- \frac{27}{4} +3=$

$\frac{-27+12}{4} =- \frac{15}{4}$

d)
     $[(- \frac{5}{3} ) ^{-1} +( \frac{5}{2}) ^{-1} ] ^{-1} =$

$(- \frac{3}{5} + \frac{2}{5} ) ^{-1} =$

$(- \frac{1}{5} ) ^{-1} =-5$

e)

$( \frac{1}{3} ) ^{-3} .0,5 ^{-2} =$

$8. \frac{1}{0,25} = \frac{8}{0,25} =32$

f)
   $6( \frac{2}{3} ) ^{2} +4(- \frac{3}{2} ) ^{-2} =$

$6( \frac{4}{9} )+4( \frac{4}{9} )=$

$\frac{24}{9} + \frac{16}{9} = \frac{40}{9}$