Mathematics · Algebra
The factors of 2a7 - 128a are:
- 12a(a2 + 4)(a2 - 4)(a2 + 2a + 4)
- 22a(a + 2)(a - 2)(a2 + 2a + 4)(a2 - 2a + 4)✓
- 32a(a + 2)(a - 2)(a2 + 2a - 4)(a2 - 2a - 4)
- 42a(a + 2)3(a - 2)3
Correct answer
2a(a + 2)(a - 2)(a2 + 2a + 4)(a2 - 2a + 4)
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