I need to prove " If m and n are each sum of two squares, then their product mn is also a sum of two squares. THANKS!!

- February 5th 2013, 10:13 PMerockdontstopI need help in proving " If m and n are each sum of two squares, then their p....
I need to prove " If m and n are each sum of two squares, then their product mn is also a sum of two squares. THANKS!!

- February 5th 2013, 10:48 PMProve ItRe: I need help in proving " If m and n are each sum of two squares, then their p....
Write and . Then

which is also the sum of two squares :) - February 5th 2013, 11:01 PMerockdontstopRe: I need help in proving " If m and n are each sum of two squares, then their p....
Thank you! I have more questions!