" 1."(x^(4))/(16)-(y^(4))/(81)

Factorise : (x^(4))/(16)-(y^(4))/(81)

Factorise : (x^(4))/(16)-(y^(4))/(25)

The value of ((256x^(16))/(81y^(4)))^(-(1)/(4))' is

If x=2tanalpha,y=2cotalpha , then 16((1)/(4+x^(2))+(1)/(4+y^(2)))=?

Factorize: x^(4)-y^(4) (ii) 16x^(4)-81x^(4)-(y+z)^(4)( iv )2x-32x^(5)3a^(4)-48b^(4)(vi)81x^(4)-121x^(2)

The value of ((32)/(243))^(-4/5) is a.(4)/(9) b.(9)/(4) c.(16)/(81) d.(81)/(16)

-(2)/(3)-(1)/(2)((4)/(9))-(1)/(3)((8)/(27))-(1)/(4)((16)/(81))-…..oo=

-(2)/(3)-(1)/(2)((4)/(9))-(1)/(3)((8)/(27))-(1)/(4)((16)/(81))-…..oo=

If 2x-y+1=0 is a tangent to the hyperbola (x^2)/(a^2)-(y^2)/(16)=1 then which of the following CANNOT be sides of a right angled triangle? (a)a ,4,2 (b) a ,4,1 (c)2a ,4,1 (d) 2a ,8,1

If 2y + (1)/(2y) = 3 , then 16y^(4) + (1)/(16y^(4)) = "_____" .