Test 9 Section 4 Question 16

This question says that the whole expression above resolves itself to just equal . Which means all the constant terms and terms need to cancel out somehow. We can use that fact to figure out what is.

First, let’s FOIL it out:

Now let’s combine like terms:

Again, this is supposed to simplify to just . Obviously the and the cancel out, and the must also cancel out.

Divide each side by and you get simply:

Now that we know , we can solve for .

Therefore, .