Question

PLS ANSWER IT'S REALLY URGENT AND DON'T SPAMM!
If [a+1]²+[b+1]² = 0, then a³+b³=?

Answer 1

We know that if a + b + c = 0 then,

a^3 + b^3 + c^3 = 3abc;

Comparing with the given equation, we can see that c = -1.

So a + b + (-1) = 0

ie. a + b = 1.