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{(a + \sqrt{1 - a^{2}})}^{6} + {(a - \sqrt{1 - a^{2}})}^{6}

এর মান কোনটি?

2 + 24 a^{2} - 24 a^{4}

5 - 7 a + a^{2}

9 - 8 a + a^{4}

7 + 15 a^{2} - a^{4}

11 - 9 a + 8 a^{2}

ANS : 1

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