Hey there! :)
-11j - 33k
To factor something is to simply take out anything that these two numerals have in common. Ask yourself, what goes into both -11j & -33k?
-11 goes into both of these numerals, so simply divide -11j & -33k with -11j.
-11j ÷ -11 = j
-33k ÷ -11 = 3k
So, our factored answer should look like this :
-11(j + 3k)
Hope I helped!