If `x=3\ a n d\ y=-1,` find the values of each of the using identity: `(9y^2-4x^2)(81 y^4+36 x^2y^2+16 x^4)`

If x=3 and y=-1, find the values of each of the using identity: (9y^(2)-4x^(2))(81y^(4)+36x^(2)y^(2)+16x^(4))

If x=3\ a n d\ y=-1, find the values of each of the using identity: (3/x-x/3)((x^2)/9+9/(x^2)+1)

If x=3\ a n d\ y=-1, find the values of each of the using identity: (x/4-y/3)\ ((x^2)/(16)+(x y)/(12)+(y^2)/9)

If x=3\ a n d\ y=-1, find the values of each of the using identity: (x/7+y/3)((x^2)/(49)+(y^2)/9-(x y)/(21))

If x+y=4\ a n d\ x y=2, find the values of x^2+y^2

If x=3 and y=-1, find the values of each of the using identity: ((x)/(4)-(y)/(3))((x^(2))/(16)+(xy)/(12)+(y^(2))/(9))

If x=3 and y=-1, find the values of each of the using identity: ((3)/(x)-(x)/(3))((x^(2))/(9)+(9)/(x^(2))+1)

If 4x^2+y^2=40\ a n d\ x y=6,\ find the value of 2x+ydot

If 3x+2y=12\ a n d\ x y=6, find the value of 9x^2+4y^2dot

If 2x+3y=8 and x y=2 , find the value of 4x^2+9y^2