" 38.Which of the two expressions,"sqrt(11)-sqrt(10)" a "

Which of the two expressions , sqrt(11)-sqrt(10) and sqrt(12)-sqrt(11) is greater?

sqrt(?)-11=sqrt(1764)

sqrt(?)-11=sqrt(1521)

Simplify the following expressions: (11+sqrt(11))(11-sqrt(11))( ii) (5+sqrt(7))(5-sqrt(7))(sqrt(8)-sqrt(2))(sqrt(8)+sqrt(2))

Evaluate, Correct to one place to decimal, the expression 5/(sqrt(20)-sqrt(10))," if "sqrt(5)=22 and sqrt(10)=3.2

Simplify each of the following expressions : (sqrt3+sqrt11)^2 .

Simplify the following expressions. 4/(sqrt(11)-sqrt(7))

Simplify the following expressions. (sqrt(11) -sqrt(7))(sqrt(11) + sqrt7)

(sqrt(11)+sqrt(2))/(9)=