Answer:
Step-by-step explanation:
The easiest way to do this is to use the distributive property.
Put the brackets around the terms on the right.
b = (f^2 * A + 2HA)
A is a common factor on the right.
b = A * (f^2 + 2H)
Now divide by f^2 + 2H
b/(f^2 + 2H) = A
