Math Problem You Will Fail

I do have a bachelor in Math, notice my previous post before the new one. I wrote 15. lol

 

You are, but that almost wasn't really a math thing. It was a trick question and you caught it.

 

But I do have a B.S in Math
I got through Calculus, Theories, etc

 

you are all wrong

the third row is: burger + (fries * fries) + (fries * fries) = 9

(so f*f and not 2*f)

 

That leaves no valid value for fries, as burger is 5. x(x) + x(x) will never equal 4.
Edit: Whoops: unless x (i.e. fries) is the (irrational, non-integer) radical 2, in which case the solution to the problem would be 19.1. Good one bro

 

the answer 15 is incorrect
here is why:

so the THIRD row is: burger + (fries * fries) + (fries * fries) = 9
if you put 1 for the fries the row is: 5 + (1 * 1) + (1 * 1) = 9
======================= 5 + 1 + 1 = 7 (and not 9, but it should be 9, so the fries is not 1)