Question

Please help. I need it by tonight

Answer 1

`\bf ~\hspace{7em}\textit{negative exponents} \\\\ a^(-n) \implies \cfrac{1}{a^n} ~\hspace{4.5em} a^n\implies \cfrac{1}{a^(-n)} ~\hspace{4.5em} \cfrac{a^n}{a^m}\implies a^na^(-m)\implies a^(n-m) \\\\[-0.35em] ~\dotfill\\\\ x^(-3)\cdot x^3\cdot y^(-4)\implies \cfrac{1}{\begin{matrix} x^3 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix} }\cdot ~~\begin{matrix} x^3 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~ \cdot \cfrac{1}{y^4}\implies \cfrac{1}{y^4}`