Subject: Algebra 1 again Name: Teresa Who is asking: Student Level: Secondary Question: I am suppose to subtract the lower polynomial from the one above it. 3a 6b+8f ________________ The answer I came up with is 4b+4f. I would like to know if this answer is correct. If it is wrong would you please explain how to work the problem. Hi again Teresa,One way to approach this problem is to write it out explicitly. What I mean is to write "subtract the lower polynomial from the one above it" as Removing the parentheses this expression becomes = 17b  6f If you look at the expression it is the top equation, minus the bottom expression with all the signs changed. Hence a quicker way to approach this problem is to change the signs of all the terms in the bottom expression and then add. That is subtract 3a  6b + 8f ________________ becomes add +3a + 6b  8f ________________
11b plus 6b is 17b 2f plus 8f is 6f Hence 3a  6b + 8f ________________ is Penny
