The Value of $$ {\sqrt{6-\sqrt{17-2\sqrt{72}}}}$$ is closest to:

Evaluate: $${-(4-6)^2-3(-2)+।-6।\over 18-9÷3×5}$$

Simplify : $$ {(2x)^{2}-(2y)^{2}-(4x)^{2}}$$

If $$ {y={2x-1\over x+3}}$$ find x when y=1

If $${a+b=10}$$ and $$ \sqrt{a\over b}-13=-\sqrt{b\over a}-11$$, then what is the value of $${3ab+4a^2+5b^2}$$?

Simplify : $$ {5\over3}×{7\over51}\ of \ {17\over5}-{1\over3}\over {2\over9}×{5\over7}\ of \ {28\over5}-{2\over3}  $$

Simplify the following equation.
$$ {(100)}^{1\over2}.{(0.001)}^{1\over3}-{(0.0016)}^{1\over4}.{3}^{0}+({5\over4})^{-1} $$

$$ \sqrt{0.00004761} $$   equal to