Find the square root of the following: `x^2/y^2+y^2/x^2-1/i (x/y-y/x)-9/4`

Find the square root of x^2/y^2+y^2/x^2+1/(2i)(x/y+y/x)+31/16 .

Find the product of the following. (x^2+9y^2+4-3xy-2x-6y) (x+3y+2)

Find the square root of (a) -8-6i (b) (x^2)/(y^2)+ (y^2)/(x^2)-(1)/(i) ((x)/(y)-(y)/(x))-(9)/(4) .

Find the square root of the expression (4x^2)/(y^2)+(20x)/(y)+13-(30y)/(x)+(9y^2)/(x^2)- (2x)/(y)+5-(3y)/(x) .

Find the square root of the expressions (x^(2))/(y^(2))-10(x)/(y)+27-10(y)/(x)+(y^(2))/(x^(2))

Find the square root of y+sqrt(y^(2)-x^(2))x^(2)>y^(2)

Find the radical centre of the following circles. x^2 + y^2 - 4x - 6y + 5 = 0 " __"(i) x^2 + y^2 - 2x -4y - 1 = 0" ___"(ii) x^2 + y^2 - 6x - 2y = 0 " __"(iii)