The rationalising factor of $2\sqrt 3 - \sqrt 7 $ is
The rationalising factor of $2\sqrt 3 - \sqrt 7 $ is
- A
$\sqrt 3 + \sqrt 7 $
- B
$2\sqrt 3 + \sqrt 7 $
- C
$\sqrt 3 + 2\sqrt 7 $
- D
None of these
Similar Questions
If $x = \sqrt 7 + \sqrt 3 $ and $xy = 4,$then ${x^4} + {y^4}=$
If $x = \sqrt 7 + \sqrt 3 $ and $xy = 4,$then ${x^4} + {y^4}=$
${{\sqrt 2 } \over {\sqrt {(2 + \sqrt 3 )} - \sqrt {(2 - \sqrt 3 } )}} = $
${{\sqrt 2 } \over {\sqrt {(2 + \sqrt 3 )} - \sqrt {(2 - \sqrt 3 } )}} = $
${a^{m{{\log }_a}n}} = $
${a^{m{{\log }_a}n}} = $
If ${a^x} = {b^y} = {(ab)^{xy}},$ then $x + y = $
If ${a^x} = {b^y} = {(ab)^{xy}},$ then $x + y = $
Number of value/s of $x$ satisfy given eqution ${5^{x - 1}} + 5.{(0.2)^{x - 2}} = 26$.
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