Respuesta :

bosm93

Answer:

-3h^3+6h^2-3h

Step-by-step explanation:

You will just multiply 3h with everything inside, Warning for + and -

devishri1977

Answer:

Step-by-step explanation:

3h(-h² + 2h  - 1) = 3h*(-h²) + 2h*3h - 1 * 3h

                        = -3h³ + 6h² - 3h

Distribute '3h' to every term of the expression( -h² + 2h - 1)