Answer:
6
- 19x + 15
Step-by-step explanation:
(2x - 3) (3x - 5)
2x(3x-5) - 3 (3x-5)
6
- 10x - 3 (3x - 5)
6
- 10x - 9x + 15
6
- 19x + 15
This is the distributive property. You take what is outside of the parenthesis and DISTRIBUTE it inside the parenthesis.
For the complex roots I got 1,2,-3
Answer:

x | y
10 1 = 1/2 (10) -4=5-5= 1
-2 -5 = 1/2(-2)-4=-1-4= -5
4 -2 = 1/2(4)-4=2-4= -2
-8 -8 = 1/2(-8)-4=-4-4= -8