প্রশ্নঃ
4x4 +25x2 +36=?
-
ক.
(x + 2)(x - 2)(2x + 3)(2x - 3)
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খ.
(2x + 1)(2x - 1)(2 + 6)(x - 6)
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গ.
(x + 3)(x - 3)(2x + 2)(2x - 2)
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ঘ.
(x + 2)(2x - 3)(2x + 3)(3x + 2)
উত্তরঃ ক
 (x + 2)(x - 2)(2x + 3)(2x - 3) খ) (2x + 1)(2x - 1)(2 + 6)(x - 6) গ) (x + 3)(x - 3)(2x + 2)(2x - 2) ঘ) (x + 2)(2x - 3)(2x + 3)(3x + 2) উত্তর: ক) (x + 2)(x - 2)(2x + 3)(2x - 3)
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