Es. N 652

(2-14/9)^2:(-2/3)^2-27*(2-5/3)^4-2/9=

=(4/9)^2:(4/9)-27*(1/3)^4-2/9=

=16/81*9/4-27*(1/81)-2/9=

=4/9-1/3-2/9=

=-1/9

652)

$\big(2-\frac{14}{9}\big)^2 : \big(-\frac{2}{3}\big)^2 -27·\big(2-\frac{5}{3}\big)^4-\frac{2}{9}$ =

= $\big(\frac{18-14}{9}\big)^2 : \frac{4}{9} -27·\big(\frac{6-5}{3}\big)^4-\frac{2}{9}$ =

= $\big(\frac{4}{9}\big)^2 · \frac{9}{4} -27·\big(\frac{1}{3}\big)^4-\frac{2}{9}$ =

= $\frac{16}{81} · \frac{9}{4} -27·\frac{1}{81}-\frac{2}{9}$ =

= $\frac{4}{9} · \frac{1}{1} -1·\frac{1}{3}-\frac{2}{9}$ =

= $\frac{4}{9}-\frac{1}{3}-\frac{2}{9}$ =

= $\frac{4-3-2}{9} = -\frac{1}{9}$