Answer:
-8r^6y^5.
Explanation:
In order to find the product, we multiply the coefficients and then add the powers of the same variable.
Coefficient of -2r^5y^2: -2
Coefficient of 4ry^3: 4
Power of r: 5 + 1 = 6
Power of y: 2 + 3 = 5
Product: -2 * 4 = -8
r^6 * y^5 = -8r^6y^5
Therefore, the product of -2r^5y^2 and 4ry^3 is -8r^6y^5.