which equation represents the vertex form of the equation y=x^2+2x-6 a. y=(x+2)^2-7 b. y=(x+2)^2-6 c. y=(x+1)^2-6 d. y=(x+1)^2-7

Circle d circumscribes abc and abe. which statements about the triangles are true? statement i: the perpendicular bisectors of abc intersect at the same point as those of abe. statement ii: the distance from c to d is the same as the distance from d to e. statement iii: bisects cde. statement iv: the angle bisectors of abc intersect at the same point as those of abe. a. i only b. i and ii c. ii and iv d. i and iii e. iii and iv