$$ \begin{aligned} \frac{x^1}{2}\frac{x^1}{4} &= 0&& \text{multiply ALL terms by } \color{blue}{ 4 }. \\[1 em]4 \cdot \frac{x^1}{2}\frac{x^1}{4} &= 4\cdot0&& \text{cancel out the denominators} \\[1 em]\frac{x^1}{2}x^1 &= 0&& \text{multiply ALL terms by } \color{blue}{ 2 }. \\[1 em]2 \cdot \frac{x^1}{2}x^1 &= 2\cdot0&& \text{cancel out the denominators} \\[1 em]x^2 &= 0&& \\[1 em] \end{aligned} $$

This page was created using