Question

1)resolva as equações
a) x=$(27 ^{ \frac{1}{3} } + 64 ^{ \frac{1}{2} } - 8 ^{ \frac{2}{3} } +4 ^{ \frac{1}{2} }) ^{ \frac{1}{2} }$

b) x=$(-2) ^{3} - 3^2+[( -\frac{1}{2}) ^{-3} . 2 ^{-1}]$÷ ( \frac{1}{4}) ^{-1} [/tex]

Answer 1

a) x=
  
  x= (∛27 + √64 - ∛8² + √4)^1/2
   
  x = ( 3+8-4+2)^1/2
  
  x= 9^1/2 ==> x= √9  ==> 3



b) x=÷ ( \frac{1}{4}) ^{-1} [/tex]
     x = - 8 - 9 + [ 8.1/2] : (1/4)^-1
     x =  -17 + 4 : 4
     x = - 17 + 1
     x = - 16