1 . 4x4 +25x2 +36=?
- A. (x + 2)(x - 2)(2x + 3)(2x - 3)
- B. (2x + 1)(2x - 1)(2 + 6)(x - 6)
- C. (x + 3)(x - 3)(2x + 2)(2x - 2)
- D. (x + 2)(2x - 3)(2x + 3)(3x + 2)
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