The problem in the image reads:

"Jika $P(x) = ax^3 + bx^2 + (a - 2b)x - a$ habis dibagi oleh $x^2 + 2$ dan $x + b$, maka nilai $ab$ adalah..."

This translates to:

"If $P(x) = ax^3 + bx^2 + (a - 2b)x - a$ is divisible by $x^2 + 2$ and $x + b$, then the value of $ab$ is..."

We are given that $P(x)$ is divisible by two factors $x^2 + 2$ and $x + b$. Therefore, we