sqrt(10+2sqrt(21))=...

sqrt(7+2sqrt(10))

The value of 5^(log_((1)/(5))((1)/(2)))+log_(sqrt(2))(4)/(sqrt(7)+sqrt(3))+log_((1)/(2))(1)/(10+2sqrt(21)) is.....

If x-(2)/(sqrt(10)-sqrt(8)),y-(2)/(sqrt(10)+2sqrt(2)) , then (x-y)^(2) =

sqrt(10+2sqrt(6)+2sqrt(10)+2sqrt(15)) is equal to (sqrt(2)+sqrt(3)+sqrt(5))(sqrt(2)+sqrt(3)-sqrt(5))(c)(sqrt(2)+sqrt(5)-sqrt(3))(d) None of these

polar from of -sqrt(7)+i sqrt(21)

If sqrt(10-2 sqrt 21)+ sqrt(8+2 sqrt 15)=sqrt a+ sqrt b , where a and b are positive integers, then the value of sqrt(ab) is closest to:

If sqrt(10-2 sqrt21)+ sqrt(8+2 sqrt15)= sqrta+ sqrt b , where a and b are positive integers, then the value of sqrt(ab) is closest to : यदि sqrt(10-2 sqrt21)+ sqrt(8+2 sqrt15)= sqrta+ sqrt b है, जहाँ a और b धनात्मक पूर्णाक है, तो sqrt(ab) का मान ( लगभग ) ज्ञात करें |

The domain of the function f(x)=sqrt(10-sqrt(x^4-21 x^2)) is a. [5,oo) b. [-sqrt(21),sqrt(21)] c. [-5,-sqrt(21)]uu[sqrt(21),5]uu{0] d. (-oo,-5] U [5,oo)