Answer:
2l^2 + 2m^2 + 2n^2 + 2nl + 2lm + 2mn
Second one's answer ^
<em><u>Not sure about that first one..</u></em>
Answer:
x=9
Step-by-step explanation:
i think it might be B. :)
The best answer to your question is 'D'
Not completely sure but the speed of light
