Answers+steps please?

If m 17 27 90 63 ** picture is attached

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?

This is my question~~ ( r ^ 4 - 2r ^ 3 - 23 r ^ 2 - 4r - 32)÷(r+4) ~~ i must use long division to solve it : / i was wondering if anyone world like to solve it. and if so, share step-by-step explanations! you! ❤