What is the locus of the point which moves in such a way that it is always equidistant from two intersecting line

Your answer is, a ellipse

Ellipse is also defined as the locus of a point which moves such that the sum of its distances from the two fixed points is a constant which is equal to the length of the major axis. F1 and F2 are two fixed points called foci. The line AB which passes through the foci with its end A and B lying in the curve is called a major axis.

Sur hope this helps

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

3 is greater then both of those numbers