Use algebra tiles to find .
(
3
x
2
+
5
x
+
9
)
+
(
x
2
+
8
x
+
2
)
+
Combine like terms. For example, write 3 instead of 1 + 1 + 1.
ref_doc_title.
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Now entering the Challenge Zone—are you ready?
Now entering the Challenge Zone—are you ready?