यदि $a = 7 - 4 \sqrt{3}$ है,तो $a^{\frac{1}{2}} + a^{-\frac{1}{2}}$ का मान ज्ञात कीजिए।

  • A
    $3 \sqrt{3}$
  • B
    $4$
  • C
    $7$
  • D
    $2 \sqrt{3}$

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यदि $\frac{a}{b} = \frac{1}{2}$ है,तो $\frac{3a + 2b}{3a - 2b}$ का मान क्या होगा?

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यदि $x=2$ है,तो $x^{3}+27x^{2}+243x+631$ का मान ज्ञात कीजिए।

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