Respuesta :

3y^2 • 4x^2y • 5x = (3*4*5) * (y^2 * y) * (x^2*x) = 60 * y^3 * x^3 = 60 (xy)^3


where ((y^2 * y)) adding the powers in case of multiplication

and also for this:
(x^2*x)