If `25^(20x) = 40804 and 64^(sqrty)=5^18` then `(5^(4x-1))^5/(4^(-sqrt(y))`

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

x+sqrt(5)=4+sqrt(y), then x+y=

If (9+4sqrt(5))^(x)+(9-4sqrt(5))^(x)=18 then the value of x^(2)-(1)/(x^(2))

(9+4sqrt(5))^(x)+(9-4sqrt(5))^(x)=18, then find x^(2)-(1)/(x^(2))

If (x)/(x^(1.5))=8x^(-1) and x>0, then x=(sqrt(2))/(4) (b) 2sqrt(2)(c)4(d)64

If 4^(x)-4^(x-1)=24, then (2x)^(x) equals 5sqrt(5) (b) sqrt(5)(c)25sqrt(5)(d)125

b. sqrt(64x^(3)y^(5))-:sqrt(16x^(5)y^(7))

If f(x):(25-x^(4))^((1)/(4)) for 0

Expand (x+y)^(4)-(x-y)^(4) . Hence find the value of (3+sqrt(5))^(4) -(3-sqrt(5))^(4) .

If the tangent drawn at point (t^(2),2t) on the parabola y^(2)=4x is the same as the normal drawn at point (sqrt(5)cos theta,2sin theta) on the ellipse 4x^(2)+5y^(2)=20 ,then theta=cos^(-1)(-(1)/(sqrt(5)))( b) theta=cos^(-1)((1)/(sqrt(5)))t=-(2)/(sqrt(5))(d)t=-(1)/(sqrt(5))