" 21."[(sqrt(3)+1)/(sqrt(3)-1)+(sqrt(2)+1)/(sqrt(2)-1)+(sqrt(3)-1)/(sqrt(3)+1)+(sqrt(2)-1)/(sqrt(2)+1)]

(sqrt(3)+1+sqrt(3)+1)/(2sqrt(2))

(2+sqrt(3))/(2-sqrt(3))+(2-sqrt(3))/(2+sqrt(3))+(sqrt(3)+1)/(sqrt(3)-1)is

(1)/(sqrt(2)+sqrt(3))-(sqrt(3)+1)/(2+sqrt(3))+(sqrt(2)+1)/(2+2sqrt(2))

(sqrt(2)(2+sqrt(3)))/(sqrt(3)(sqrt(3)+1))-(sqrt(2)(2-sqrt(3)))/(sqrt(3)(sqrt(3)-1))

(-sqrt(3)/2 + sqrt(3))/(1/sqrt(2)-1)=

If sqrt(3) = 1.73 find the value of : (2+sqrt(3))/(2-sqrt(3))+(2-sqrt(3))/(2+sqrt(3))+(sqrt(3)-1)/(sqrt(3)+1)-(sqrt(3)+1)/(sqrt(3)-1) .

(1+sqrt(2))/(sqrt(5)+sqrt(3))+(1-sqrt(2))/(sqrt(5)-sqrt(3))

(1)/(sqrt(2)+sqrt(3))+(1)/(sqrt(3)+sqrt(4))

([(sqrt(2)+i sqrt(3))+(sqrt(2)-i sqrt(3))])/([(sqrt(3)+1sqrt(2))+(sqrt(3)-1sqrt(2))])