I need help with understanding these, if you could put (at least half of) the answers with a slight explanation it would help A LOT!!!!

Answer:
khan videos
Step-by-step explanation:
hi, i recommend to look at khan academy's videos, they are free and you can learn a lot from it. good luck with your math!
Answer: x(x-4)+2(x-4)=0 The answer is
=4
= −2
Step-by-step explanation:
Distribute, Then Cobine the like terms, Then you get your solution
(i would go further into explanation but its kinda hard to explain)