$[(5 \sqrt{7}+\sqrt{7}) \times (4 \sqrt{7}+8 \sqrt{7})]-(19)^{2} = ?$

  • A
    $143$
  • B
    $72 \sqrt{7}$
  • C
    $134$
  • D
    $70 \sqrt{7}$

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જો $a^{2}=2$ હોય,તો $(a+1)$ બરાબર શું થાય?

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જો $\sqrt{12} = 3.464$ હોય,તો $\sqrt{\frac{3}{4}} + 2 \sqrt{\frac{4}{3}}$ ની કિંમત શોધો.

$\sqrt{10} \times \sqrt{15} = ?$

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