Question

(3xy).(-5xao quadrado).(-y)

Answer 1

$(3xy)*(-5 x^{2} )*(-y) = 15 x^{3} y^{2}$

Answer 2

= 3xy . (- 5x².(- 1 y)

= 3.(-5).(-1) = 3.5 = 15

            1 + 2
x.x² = x           =  x³

           1 + 1
y.y = y            = y²

= 15x³y²