multiply

(-1/2y^2)-(3/5y^8

To multiply the expressions (-1/2)y^2 and (-3/5)y^8, you need to multiply the coefficients (-1/2) and (-3/5), and then multiply the variables y^2 and y^8 separately. Here's how you can do it step by step:

1. Multiply the coefficients:
(-1/2) x (-3/5) = 3/10

2. Multiply the variables:
y^2 x y^8 = y^(2 + 8) = y^10

3. Combine the results:
The product of (-1/2)y^2 and (-3/5)y^8 is (3/10)y^10.

So, the simplified expression is (3/10)y^10.