If the ordered pair (x, y) lies on the circle `x^2 + y^2 = 9`, then the largest value of the expression `x^2 + 2y^2 + 4x` equals

If (x,y) lies on circle x^(2)+y^(2)=1, then maximum value of (x+y)^(2)

Find the ordered pair (x,y) for which x^(2)-y^(2)-i(2x+y)=2i

Find the ordered pair (x ,y) for which x^2-y^2-i(2x+y)=2idot

Find the ordered pair (x ,y) for which x^2-y^2-i(2x+y)=2idot

Find the ordered pair (x ,y) for which x^2-y^2-i(2x+y)=2idot

Given that x^(2)+y^(2)=14x+6y+6, find the largest possible value of the expression E=3x+4y.

If the ordered pairs (x+ 1 ,5) and ( 4,x+2y) are equal then (x,y) is:

If the ordered pairs (x-2,2y+1) and (y-1,x-2) be equal then find x,y

The pole of a straight line with respect to the circle x^2+y^2=a^2 lies on the circle x^2+y^2=9a^2 . If the straight line touches the circle x^2+y^2=r^2 , then :

If x ,y in R , satisfies the equation ((x-4)^2)/4+(y^2)/9=1 , then the difference between the largest and the smallest valus of the expression (x^2)/4+(y^2)/9 is_____