Are these both prime? Can they be factored?
y^2-y+156
and
r^2-9r-39
Thank you
well, I need two numbers one apart that multiply to 156
try 12 and 13 :)
(y-13)(y+12)
for 39 they must differ by 9
3 and 13 nope, both prime so no other way ,,, hopeless
too bad it was not r^2-10r -39 :)