Question

*Which of the following is NOT a factor of (81 - k⁴)?*

1️⃣ (9 + k)
2️⃣ (3 − k)
3️⃣ (3 + k)
4️⃣ (9 + k²)​

Answer 1

Answer:

option 4 is not a factor of (81-k4)