Can you tell me how they got the answer 35 sq. answer the one with the l looking shape

No direct answer needed because it is already given.

Step-by-step explanation: What I usually do with shapes like this is break it up into two shapes. And for this particular shape, it's relatively easy. I spilt the shape into a rectangle and square and went from there. Since the rectangle width is 3, and can subtract that to 5 and get 2, which tells us that the length and width for the square is 4 and 2. Three times nine is twenty-seven. Add that to 8 (which is the result of 4 times 2) and it equals to 35. Hope that helped! :D

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation