Equation of common tangent of `y=x^2,y=-x^2+4x-4` is

Number of common tangents of y= x^(2) and y= -x^(2) + 4x -4 is

Equation of common tangent to parabola y^2 = 2x and circle x^2 + y^2 + 4x = 0

Find the equation of the common tangent of y^2=4a x and x^2=4a y .

Find the equation of the common tangent of y^2=4a x and x^2=4a y .

Find the equation of the common tangent of y^2=4a x and x^2=4a ydot

Find the equation of common tangent to the parabola y^2=4x and x^2=32y .

The equation of common tangent to the curve y^2=4x and xy=-1 is

The equation of common tangent to the curves y^2 =4x and xy=2 is (A) x+2y-4=0 (B) x+2y+4=0 (C) x-2y+4=0 (D) x-2y-4=0