I'm just trying this:

`x^3+y^3+z^3=k`

Let's use a^3+b^3+c^3 formula

a^3+b^3+c^3=(a+b+c)

I'm tired of putting "^" between powers so I hope y'all can understand ^_^

[a2+b2+c2โabโbcโac]+3abc

Second one is

a3+b3+c3=(a+b+c)12[(aโb)2+(bโc)2+(cโa)2]+3abca3+b3+c3=(a+b+c)12[(aโb)2+(bโc)2+(cโa)2]+3abc

To derive these formulas, Follow these steps-

Let me first remind... (More)