$$3^{11}+3^{11}+3^{11}$$
$$3^{11}(1+1+1)$$
$$3^{11}(3)$$
$$3^{11+1}$$
$$3^{12}$$
$$3^{11}+3^{11}+3^{11}$$
$$3^{11}(1+1+1)$$
$$3^{11}(3)$$
$$3^{11+1}$$
$$3^{12}$$
$$= [ ( 9- 4 ) + ( - 10 + 3 ) ] x ( 6 ) ( - 5 ) : [ ( 12 - 8 ) ( 6 - 9 ) ( 95 - 90 ) ]$$
$$= [ ( 5 ) + ( - 7 ) ] x ( 6 ) ( - 5 ) : [ ( 4 ) ( - 3 ) ( 5 ) ]$$
$$= [ 5 - 7 ] x ( 6 ) ( - 5 ) : [ - 60 ]$$
$$= [ - 2 ] x ( 6 ) ( - 5 ) : [ - 60 ]$$
$$= ( 12 ) ( - 5 ) : [ - 60 ]$$
$$= ( - 60 ) : [ - 60 ]$$
$$= 1$$
$$\left ( \frac{18\times 25}{2^{3}\times 3^{1}\times 5^{2}} \right )^{\frac{1}{2}}$$ $$=\left ( \frac{2\times 3^{2}\times 5^{2}}{2^{3}\time...