Question

Rezolvati: (2/3) la puterea -3 +(1/5) la puterea -1 -(3/4) la puterea -2+ (1/2) la puterea 0=?
Ajutorrrr

Answer 1

= (3/2)^3 + 5 - (4/3)^2 + 1 = 
    27/8 + 5 - 16/9 + 1 = 
    (27x9)/72 + (5x72)/72 -  (16x8)/72 + 72/72 = 
    (243 + 360 - 128 +72)/72 = 547/72 = 7,597(2) 

Answer 2

[tex]( \frac{2}{3} )^{-3} +( \frac{1}{5} )^{-1} -( \frac{3}{4} )^{-2} +( \frac{1}{2} )^{0} =
 = \frac{27}{8} +5- \frac{16}{9} +1= [/tex]
$=\frac{243}{72} +\frac{360}{72}- \frac{128}{72} + \frac{72}{72}$
$= \frac{547}{72} =$