https://mail.adamaths.com/forum/
2030060100
https://mail.adamaths.com/forum/viewtopic.php?f=40&t=574
Page
1
of
1
2030060100
Posted:
Wed Aug 02, 2017 10:08 pm
by
ada
$5x^2+7y^2-5x+10y^2-x^2$