Can a2*b + a*b2 +b3 be a cube?
tkhunny Moderator Staff member Joined Apr 12, 2005 Messages 11,339 Nov 9, 2017 #2 Write "= c^3" and see where it leads. We know that (a+b)^3 = a^3 + 3(a^2)b + 3ab^2 + b^3 --How does this compare to your expression? Does his lead us anywhere?
Write "= c^3" and see where it leads. We know that (a+b)^3 = a^3 + 3(a^2)b + 3ab^2 + b^3 --How does this compare to your expression? Does his lead us anywhere?
