Factor the Polynomial Below by Grouping $z ^ { 4 } - 5 z - 9 z ^ { 3 } + 45$

question 19

Multiple Choice

Factor the polynomial below by grouping. $z ^ { 4 } - 5 z - 9 z ^ { 3 } + 45$

• A) \(\left( z ^ { 3 } - 9 \right) ( z - 5 )\)
• B) \(\left( z ^ { 3 } + 5 \right) ( z - 9 )\)
• C) \(\left( z ^ { 3 } + 9 \right) ( z - 5 )\)
• D) \(\left( z ^ { 3 } + 9 \right) ( z + 5 )\)
• E) \(\left( z ^ { 3 } - 5 \right) ( z - 9 )\)

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