The number of points on x-axis which are at a distance c(c<3) from the points (2, 3) is
None of these
Let a point on x-axis be (x1,0), then its distance
from the point (2,3)=√(x1−2)2+9=c
or (x1−2)2=c2−9∴x1−2=√c2−9
But c<3⇒c2−9<0
∴x1 will be imaginary