can u do test 1 section 3 #15?
Sure! This one is all about corresponding coefficients of equivalent polynomials. When you expand what you’re given…
…you can conclude that the corresponding coefficients of and
are equal. In other words, you know that
and
. Since the question also tells you that
, you know that either
and
or
and
. (Otherwise,
won’t equal
!)
The two possible values for , then, are:
That’s answer choice D.