Ineed the equation for both options

Ineed asap.i cant understand this question i need someone to me right away

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

Daryl factors the polynomial p(x)=x3+x2−26x+24 to rewrite it as p(x)=(x+6)(x−4)(x−1). which equations must be true? there may be more than one correct answer. select all correct answers. p(1)=0 p(−4)=0 p(−1)=0 p(6)=0 p(4)=0 p(−6)=0