What is the positive solution of x2 – 36 = 5x?

First you would subtract 5x on each side. After that it should look like this:
x2+5x-36=0
Then you factor. You try to find factors of -36 and 5. Once you get that, you would split the two factors up into parenthesis with x. Example: (x-5)(x-4)=0
Then you would put both at 0 and solve from there to get your final answer I know I didn't give you the answer but I hope my explanation helped. :)