Question

Which of the following is equivalent to the expression below?
(2x^3y^-4) + (-xy^2)

Answer 1

$\\ \sf\longmapsto \dfrac{2x^3y^{-4}}{-xy^2}$

$\\ \sf\longmapsto -2x^{3-1}y^{-4-2}$

$\\ \sf\longmapsto -2x^2y^{-6}$

Answer 2

$▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪$

The equivalent expression will be :

• $\dfrac{2 {x}^{3} y {}^{ - 4} }{ - x {y}^{2} }$

• $- 2 {x}^{2} y {}^{ - 6}$

hence, the correct choice is C