Answer:
[tex]\frac{1}{2}[/tex]
Step-by-step explanation:
using the rule of exponents
[tex]a^{-m}[/tex] = [tex]\frac{1}{a^{m} }[/tex]
given
2[tex]x^{-4}[/tex] y ( substitute x = 2 and y = 4 into the expression )
= 2 × [tex]2^{-4}[/tex] × 4
= 2 × 4 × [tex]\frac{1}{2^{4} }[/tex]
= 8 × [tex]\frac{1}{16}[/tex]
= [tex]\frac{8}{16}[/tex]
= [tex]\frac{1}{2}[/tex]
