1. Given \( 3 x^{3}+8 x^{2}-1 \equiv(x+5)(x-2) Q(x)+A x+B \), where \( Q(x) \) is a polynomial. Find \( \begin{array}{ll}\text { (i) } Q(x) \text {, } \\ \text { (ii) the values of } A \text { and } B \text {. } \\ \text { [Answer Key] } \\ \begin{array}{ll}\text { (i) } 3 x-1 & \text { (ii) } A=33, \quad B=-11\end{array}\end{array}> \).

Certainly! Let's dive into some fun and engaging background concepts relevant to polynomials and polynomial long division. When we talk about polynomials, we're really diving into a mathematical universe filled with power! The way polynomials behave can be traced back to their foundational properties, and understanding these helps you grasp why polynomials often have unique remainders upon division. It's like uncovering secret pathways in a labyrinth where each turn leads to a new treasure, or in this case, a new understanding! Then, when you apply polynomial division in real-world scenarios, you're essentially transforming complex equations into more manageable parts, akin to a chef dicing vegetables for a recipe. Engineers use polynomial equations to model trajectories, while economists apply them to forecast trends. Knowing how to perform polynomial long division makes you the culinary ace of mathematics, ready to slice through challenges with finesse!