5 equals 5/1. Simple as that.
9 is the answer negatives cancel out creating positve
2a^2+4a+1 is equivalent to 4a+4/2a*a^2/a+1
Answer:

Step-by-step explanation:
Based on the given conditions, write: 
Find common denominator and write numerators above common denominator: 
Calculate the sum or difference: 
Divide the fraction by multiplying its reciprocal: 
Calculate the product or quotient: 
Answer: