If in `sqrt3 + root(3)5,x= sqrt3 and y=3sqrt5` , then its rationalisising factor is :

If x= sqrt5+sqrt3 and y = sqrt5-sqrt3 , then x^4 -y^4

The Rationalising factor of 1/(5-sqrt3) is

If x=sqrt(5)+sqrt(3) and y=sqrt(5)-sqrt(3), then x^(4)-y^(4)

If 5-sqrt(3)=x+y sqrt(3) then (x,y) is

If sqrt(3)x-sqrt(2y)=sqrt(3);sqrt(5)x+sqrt(3)y=sqrt(2) then x and y are

If x=(sqrt5- sqrt3)/(sqrt5+ sqrt3) and y is the reciprocal of x, then what is the value of (x^3+ y^3) ? यदि x=(sqrt5- sqrt3)/(sqrt5+ sqrt3) है तथा y, x का पारस्परिक है, तो (x^3+ y^3) का मान ज्ञात करें |

The square root of (7 + 3sqrt5) (7 - 3sqrt5) is :