Ultimately 2 • sq rt of 5
_________
5
9r
Explanation:
4r + 9r = 13r
13r-11r = 2r
2r + 7r = 9r
Going down the chart:
6
4
3
4
6
the brackets on the outside of the lxl makes the value positive or keeps the value positive. therefor if u have y=l-3l+3 y will still =6! hope this helps!