p.
115. # 42.
The first step is to recognize that there is a common factor. You must take
out the
that
is common to both terms. This leaves a factor of
in
the FIRST
position, and a factor of
in
the SECOND
position!

Next, you can drop the red
parentheses terms within the brackets. Notice that
the y terms subtract out, and all that is left is
which
is
.

It looks nicer if you
write it like this:
Final Answer: 
46.
The first step is to recognize
that there is a common factor. You must take out the
that is common to both terms. This leaves a factor of
in the FIRST
position, and a factor of
in the SECOND
position!

Next, combine like terms within
the brackets. Notice that the y terms subtract out, and all that is left is
which is
or

It looks nicer if you write it
like this:
Final Answer:

47.
The first step is to recognize that there is a common factor. You must take
out the
that
is common to both terms. This leaves a factor of
in
the FIRST
position, and a factor of
in
the SECOND
position!

Next, remove the
parentheses within the brackets by use of the distributive property, and
combine like terms.

Final Answer: 
48.
The first step is to recognize that there is a common factor. You must take
out the
that
is common to both terms. This leaves a factor of
in
the FIRST
position, and factors of
in
the SECOND
position!

Next, remove the
parentheses within the brackets by use of the distributive property, and
combine like terms.

Final Answer: 
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