11) (-2x) (-1 + 9x) - 4x (4 + 5x)

12) 3 (-5x - 3) + 4 (6 - 3x)

11) - 14x-38x2 (squared)

12) 27x+15

Step-by-step explanation:

1. distribute the negative 2, distribute the negative 4, combine like terms

2. distribute the 3 to the parenthesis and distribute the 4 as well then combine like terms