Answer:
[tex] -\dfrac{1}{2}ab^{12} [/tex]
[tex] \dfrac{w^{10}}{3y^{4}}} [/tex]
Step-by-step explanation:
[tex] \dfrac{-2a^2b^4}{4ab^{-8}} = [/tex]
[tex] = \dfrac{-2}{4}a^{2-1}b^{4-(-8)} [/tex]
[tex] = -\dfrac{1}{2}ab^{12} [/tex]
[tex] \dfrac{-5w^4y^{-2}}{-15w^{-6}y^{2}} = [/tex]
[tex] = \dfrac{-5}{-15}w^{4 - (-6)} y^{-2 - 2} [/tex]
[tex] = \dfrac{1}{3}w^{10} y^{-4} [/tex]
[tex] = \dfrac{w^{10}}{3y^{4}} [/tex]
