Use the Boundedness Theorem to Determine Whether the Statement Is $f ( x ) = x ^ { 4 } - 9 x ^ { 3 } - 22 x ^ { 2 }$

True/False

Use the boundedness theorem to determine whether the statement is true or false.
-The polynomial $f ( x ) = x ^ { 4 } - 9 x ^ { 3 } - 22 x ^ { 2 }$ has no real zero greater than 8 .