Solution of the equation $\sqrt {(x + 10)} + \sqrt {(x - 2)} = 6$ are
$0$
$6$
$4$
None of these
The rationalising factor of ${a^{1/3}} + {a^{ - 1/3}}$ is
For $x \ne 0,{\left( {{{{x^l}} \over {{x^m}}}} \right)^{({l^2} + lm + {m^2})}}$${\left( {{{{x^m}} \over {{x^n}}}} \right)^{({m^2} + nm + {n^2})}}{\left( {{{{x^n}} \over {{x^l}}}} \right)^{({n^2} + nl + {l^2})}}=$
The rationalising factor of $2\sqrt 3 - \sqrt 7 $ is
If $x = {{\sqrt 5 + \sqrt 2 } \over {\sqrt 5 - \sqrt 2 }},y = {{\sqrt 5 - \sqrt 2 } \over {\sqrt 5 + \sqrt 2 }},$ then $3{x^2} + 4xy - 3{y^2} = $
The square root of $\sqrt {(50)} + \sqrt {(48)} $ is