`(x−y)(x+y)(x^2+y^2)(x^4+y^4)` is equal to=    

(x-y)(x+y)(x^(2)+y^(2))(x^(4)+y^(4)) is equal ot: x^(16)-y^(16)(b)x^(8)-y^(8)x^(8)+y^(8)(d)x^(16)+y^(16)

x"@"y=(x+y)^(2) x#y=(x-y)^(2) (2" @ "2)+(3#3)-(4"@"4)+(5#5) is equal to :

Area bounded by x ^(2) y ^(2)+ y ^(4)-x ^(2)-5y ^(2)+4=0 is equal to :

If x = a +1/a and y=a-1/a then sqrt(x^4+ y^4-2x^2y^2) is equal to : यदि x = a +1/a और y=a-1/a है, तो sqrt(x^4+ y^4-2x^2y^2) का मान किसके बराबर होगा?

If x^(2)+y^(2)=4, then y(dy)/(dx)+x is equal to

Find the compound ratio of the ratios (x + y) : (x - y), (x^(2) + y^(2)) : (x + y)^(2) " and " (x^(2)-y^(2))^(2) : (x^(4) - y^(4)) .