For any real numbers $a$ and $b$.
- Sum of cubes
$a^3+b^3 \equiv (a+b)(a^2-ab+b^2)$
- Difference of cubes
$a^3-b^3 \equiv (a-b)(a^2+ab+b^2)$
Resources for HKDSE Mathematics
Resources for HKDSE Mathematics
For any real numbers $a$ and $b$.
$a^3+b^3 \equiv (a+b)(a^2-ab+b^2)$
$a^3-b^3 \equiv (a-b)(a^2+ab+b^2)$
