(1)/(sqrt(7))-2

(1)/(sqrt(7)-sqrt(2))-(1)/(sqrt(7)+sqrt(2))=

The value of (1)/(2+sqrt(7))+(1)/(sqrt(7)+sqrt(10))+......+(1)/(sqrt(28)+sqrt(31))

Show that : (1)/(3-2sqrt(2))- (1)/(2sqrt(2)-sqrt(7)) + (1)/(sqrt(7)-sqrt(6))-(1)/(sqrt(6)-sqrt(5))+(1)/(sqrt(5)-2)=5 .

Rationalize the denominators or the following ( 1)/( sqrt7-2)

Rationailise the denominatios (1)/(sqrt(7)+sqrt(2))-(sqrt(7)+sqrt(2))/(sqrt(7)-sqrt(2))

(1)/(2sqrt(7)+sqrt(5))-(1)/(2sqrt(5)+sqrt(7)) simplify

Rationlise (1)/(sqrt(7)+sqrt(3)-sqrt(2))

Simplify (1)/(sqrt(7)+sqrt(3)-sqrt(2))