In triangle $PQR,$ $\angle P = \angle Q + \angle R.$ Of all three exterior angles of triangle $PQR,$ what is the least exterior angle, in degrees?

Select the correct answer. joshua likes to read. he read 6 books when he was 6 years old. every year he doubled the number of books he read the previous year. how many total books did he read between the ages of 6 and 10? a. 60 b. 90 c.186 d.187

Could somebody me with this radical simplification?

Factor this polynomial completely. x^2-8x+12