standard_description: Use the structure of an expression to identify ways to rewrite it. For example, see x^(4) – y^(4 )as (x^(2))^(2 )– (y^(2))^(2), thus recognizing it as a difference of squares that can be factored as (x^(2 )– y^(2))(x^(2 )+ y^(2)).
problem_activity: The first number in a pattern is 5. The pattern rule is to add 6.
a.   Fill in the blanks below to write up to the seventh term in the pattern.
5, ___, ___, ___, ___, ___, ___
b.   Why are all of the numbers in the pattern in Part (a) odd?


aligns: no