What number should be added to both sides of the equation to complete the square x2+12=11

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

(x-5)1/2+5=2 what is a possible solution?

Find the root(s) of f (x) = (x- 6)2(x + 2)2.