Answer:
Explanation:
1) Split the second term in
into two terms.
1 - Multiply the coefficient of the first term by the constant term.
2 - Ask: Which two numbers add up to
and multiply to
?
and
3 - Split
as the sum of
and
.
2) Factor out common terms in the first two terms, then in the last two terms.
3) Factor out the common term
.