Please help I need to know now :(

Answer:
[tex]\frac{6x*x^{3}}{y^{2}}\\\\[/tex]
Step-by-step explanation:
[tex]a^{-m}=\frac{1}{a^{m}}\\\\\frac{1}{a^{-m}}=a^{m}\\\\a^{m}*a^{n}=a^{m+n}\\\\\\\frac{6xy^{-2}}{x^{-3}}=\frac{6*x*x^{3}}{y^{2}}\\\\=\frac{6x^{(1+3)}}{y^{2}}\\\\=\frac{6x^{4}}{y^{2}}[/tex]