Question

Va rog rezolvati 0,(5 ) ²-3²+0,(2) ²=

Answer 1

$\bf \Big(\dfrac{5}{9} \Big)^{2}-{3}^{2} + \Big(\dfrac{2}{9} \Big)^{2}$

$\bf \dfrac{5^{2} }{9^{2} }-9 + \dfrac{2^{2} }{9^{2} } =$

$\bf \dfrac{25 }{81}- \dfrac{9}{1}+ \dfrac{4 }{81} =$

$\bf \dfrac{25 }{81}- \dfrac{9 \cdot81}{81}+ \dfrac{4 }{81} =$

$\bf \dfrac{25 - 729 + 4}{81}=$

$\boxed{\bf - \dfrac{700}{81}}$