Question

Trying to understand math concepts. Help me understand the areas that I have boxed please. 2) Where does the +25 and +1's come from and why is the domain and range -8 and -2? 3) Please explain letters I boxed

Circle eg : 一门 2. Given +102y+ 17 ラ (a) The center and the radius of the circle (b) The circumference and the area of the circle (c) Draw the circle. (d) The domain and the range of the circle a ) center of the circle 。 (-5,1) b) circumference-2 TI ) i "radius C) 个 Radius 3 Area of circle 2. (-51) 1-6-5-43#2 2