If `a=3-sqrt(5)` then the value of `a^4-a^3-20a^2-16a+24`

If sqrtx= sqrt3-sqrt5 , then the value of x^2-16x+6 is : यदि sqrtx= sqrt3-sqrt5 , x^2-16x+6 का मान ज्ञात करें :

If x= -5 + sqrt(-16) , find the value of x^(4) + 9x^(3) + 35x^(2)-x + 4

If 2 ** 3 =sqrt(13) and 3 ** 4=5 , then the value of 5** 12 is