Factor Completely $9 y ^ { 4 } - 49$ A) $\left( 3 y ^ { 2 } + 7 \right) ^ { 2 }$

question 175

Multiple Choice

Factor completely. If the polynomial cannot be factored, write ʺprime.ʺ
- $9 y ^ { 4 } - 49$

• A) \(\left( 3 y ^ { 2 } + 7 \right) ^ { 2 }\)
• B) \(\left( 9 y ^ { 2 } + 1 \right) \left( y ^ { 2 } - 49 \right)\)
• C) \(\left( 3 y ^ { 2 } + 7 \right) \left( 3 y ^ { 2 } - 7 \right)\)
• D) \(\left( 3 y ^ { 2 } - 7 \right) ^ { 2 }\)

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