F(x)=x^2 -3x and g(x)=2x-5 find (gof)(-3)

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Tyler reads 2/5 of a book on monday, 1/3 of it on tuesday, 2/9 of it on wednesday, and 3/4 of the remainder on thursday. if he still has 14 pages left to read on friday, how many pages are there in the book?

How many and of which kind of roots does the equation f(x)=x3−x2−x+1