Hi all, i have a question about proof writing,
Suppose $a$ and $b$ are real numbers, then LHS = $8a^3+12a^2b+6ab^2+10b^3$ and RHS = $9b^3+9b^2a+9ba^2+9a^3$,
To properly show that LHS $\neq$ RHS, what should i do? Or is it suffice to conclude LHS $\neq$ RHS by observation?