" 7.Let "x,y in R" such that "4x-x^(2)=2,4y-2y^(2)=1" then the value of "x^(3)(5-y^(3))" is "

If x,y are real and (x-1)^(2)+(y-4)^(2)=0 then the value of x^(3)+y^(3) is

If x * y = x^2+y^2 then the value of (4 * 5) * 3 is

If x ,y in R and x^2+y^2+x y=1, then find the minimum value of x^3y+x y^3+4.

If x ,y in R and x^2+y^2+x y=1, then find the minimum value of x^3y+x y^3+4.

If x ,y in R and x^2+y^2+x y=1, then find the minimum value of x^3y+x y^3+4.

If x:y= 3: 4, then the value of (5x - 2y)/(7x + 2y) =

Let real numbers x and y satisfy the equations x^(3)-3x^(2)+5x=1 and y^(3)-3y^(2)+5y=5 respectively then the value of x+y is equal to

Let A= {(x,y) in R xx R |2x^(2)+2y^(2)-2x-2y=1}, B= {(x,y) in R xx R|4x^(2)+4y^(2)-16y+7=0} and C={(x,y) in R xx R |x^(2)+y^(2)-4x-2y+5 le r^(2)} . Then the minimum value of |r| such that A uu B sube C is equal to

Let x,y,z in R and 2x+y+3z=20 then min.value of x^(2)+4y^(2)+z^(2) will be