પદાવલિનું મૂલ્ય શોધો: $\frac{2 \cdot 3^{n+1} + 7 \cdot 3^{n-1}}{3^{n+2} - 2 \cdot (1/3)^{1-n}}$

  • A
    $1$
  • B
    $3$
  • C
    $-1$
  • D
    $0$

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$20^{2-3x^2} = (40\sqrt{5})^{3x^2-2}$ હોય,તો $x$ ની કિંમત શોધો.

કિંમત શોધો: $\frac{2 \cdot 3^{n+1} + 7 \cdot 3^{n-1}}{3^{n+2} - 2 \cdot (1/3)^{1-n}}$

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$\sqrt{2+\sqrt{5}-\sqrt{6-3 \sqrt{5}+\sqrt{14-6 \sqrt{5}}}}$ ની કિંમત શોધો.

ધારો કે $p, q, r$ એ ધન સંમેય સંખ્યાઓ છે જેથી $\sqrt{p}+\sqrt{q}+\sqrt{r}$ પણ સંમેય છે. તો

$\frac{3\sqrt{2}}{\sqrt{6} + \sqrt{3}} - \frac{4\sqrt{3}}{\sqrt{6} + \sqrt{2}} + \frac{\sqrt{6}}{\sqrt{3} + \sqrt{2}} = $

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