https://www.adamaths.com/forum/
20070080060
https://www.adamaths.com/forum/viewtopic.php?f=68&t=1867
Page
1
of
1
20070080060
Posted:
Sat Sep 23, 2017 9:21 am
by
ada
$(3x+1)(3x+4)-(2x+2)(x+1)$