Answer:
144
Step-by-step explanation:
................
Answer:

Step-by-step explanation:
Since we cannot factor the expression, we must use quadratic formula: 
Plug in <em>a</em> for 2, <em>b</em> for 3, and <em>c</em> for -7 and you should find your roots.
Step-by-step explanation:
I think 10-15years
not sure tho
Answer:
the answer to your question is
2n + 20