Question

Simplificando a expressão algébrica,temos:

Answer 1

$A=\left(-4x^2y^{\frac{5}{2}\right)\left(\dfrac{x^{-1}y^{-\frac{1}{2}}}{-2}\right)-2xy^2$

$A=2x^{2-1}y^{\frac{5}{2}-\frac{1}{2}}-2xy^2$

$A=2xy^{\frac{4}{2}}-2xy^2$

$A=2xy^2-2xy^2$

$A=0$

Alternativa D