Question

5m^2 + 32m - 64 over m+8

Answer 1

First, you need to factor 5m^2 + 32m - 64
Do you want me to explain how it's done?

Answer 2

you dont factor you have divide m+8 to 5m^2 etc

Answer 3

5m² + 32 - 63 : m + 8 = 5m - 8
5m² + 40m
---------
-8m - 63
-8m -64
------
1 Rest

Solution: 5m -8 + 1/(m + 8)

Answer 4

thank you!

Answer 5

This is polynomial long division, right?
This is what I thought the shortcut would be:

5m^2 + 32m - 64 / (m+8) = (5m - 8)(m+8) / (m+8) = 5m - 8 because the (m + 8) cancel.
So the solution is 5m - 8.

Not sure where the - 63 is coming from. May someone explain?

Answer 6

yeah i dont know! i think they like to trick people