1. Stating the problem: We need to make $b$ the subject of the formula given by $ax^2b = c$. 2. The formula is $ax^2b = c$. Our goal is to isolate $b$ on one side of the equation. 3. To isolate $b$, divide both sides of the equation by $ax^2$ (assuming $a \neq 0$ and $x \neq 0$): $$\cancel{ax^2}b = \frac{c}{\cancel{ax^2}}$$ 4. Simplifying the left side, we get: $$b = \frac{c}{ax^2}$$ 5. Therefore, the subject $b$ is expressed as: $$b = \frac{c}{ax^2}$$ This means $b$ equals $c$ divided by the product of $a$ and $x$ squared.