Find circumcenter of ABC with vertices A(-2,4), B(-2,-2), and C(4,-2)

Alicense plate is to consist of 44 digits followed by 55 uppercase letters. determine the number of different license plates possible if the first and second digits must be? odd, and repetition is not permitted.

Which of the following will form the composite function?

A+b= 17, ab=70, find the value of |a-b|