Math
posted by Kelsie .
Your cousin is 26 yr older than your sister. The product of their ages is 560. How old is your sister?

sister age = s
cousin age = c
c  s = 26
c s = 560 so c = 560/s
560/s  s  26 = 0
560  s^2  26 s = 0
s^2 + 26 s  560 = 0
solution is a complex number, no real solution is possible.