X^2+71=18x-9 factoring trinomial's could you show work thanks please dont just use me for points

Acircle has the equation (x-2)^2 +y^2 =5. what are the coordinates of the circle's center?

Two lines that do not intersect are skew. always sometimes or never

Sketch the vector field vector f( vector r ) = 8vector r in the xy-plane. select all that apply. the length of each vector is 8. the lengths of the vectors decrease as you move away from the origin. all the vectors point away from the origin. all the vectors point in the same direction. all the vectors point towards the origin. the lengths of the vectors increase as you move away from the origin.