Given that the positive real numbers x, y, and z satisfy:
x2+xy+y2=9
y2+yz+z2=16
z2+zx+x2=25
Determine xy+yz+zx
(In reply to
No Subject by Cassandra Michael)
What's the matter with you?
Why, despite repeated reminders, you are indulging in indecent behavior and posting such irrelevant and idiotic comments in a Math/Logic website?