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. -5 ও -7 মূল বিশিষ্ট সমীকরণটি হবে –

x^{2} - 12 x + 35 = 0

x^{2} + 12 x + 35 = 0

- 5 x^{2} + 7 x + 35 = 0

9 x^{2} - 5 x - 35 = 0

ANS : 2

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