How can I solve this

Answer:
[tex]\frac{a^{5}b }{x^{6} }[/tex]
Step-by-step explanation:
you just need to forget about 0 because whole equation is raised to 0
and anything raise to 0 is 1
so
[tex]\frac{a^{5}b^{4} }{x^{6}b^{3} }[/tex] law of exponent [tex]a^{n}[/tex] ÷ [tex]a^{m}[/tex] = [tex]a^{n-m}[/tex]
here [tex]b^{4}[/tex] ÷ [tex]b^{3}[/tex] = [tex]b^{4-3}[/tex]
= [tex]b^{1}[/tex]
so the answer will be
[tex]\frac{a^{5}b }{x^{6} }[/tex]