If `x^2+y^2=49 and x-y=3,` then find the value of `x^3-y^3`

If 3x-2y=24 and 2x-3y=18, then find the value of x+y.

3x+y=19 and x+3y=1 then find the value of 2x+2y

If x= -2 and y =3 , then find the value of (y/x)^y .

If x=2+3i and y=2-3i then find the values of (x^(3)-y^(3))/(x^(3)+y^(3))

(i) x+2y=-7 and 3x-2y=-1, then find the value of x. (ii) If x+y=8 and 4y-x=2, then find the value of y. (iii) If 3x+5y=9 and 5x+3y=7, then find the value of x+y. (iv) If 3x-y=11 and x-3y=17, then find the value of x-y.

If 3x -y = 10 and x-3y= -2 find the value of x-y .

If 2x+3y=13 and x y=6, find the value of 8x^3+27 y^3

If 3x-2y=11 and x y=12 , find the value of 27\ x^3-8y^3

If 3x + 5y = 21 and 2x +3y = 13 , then find the values of x and y .

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