The product of two whole numbers is 37. The square root of the difference of the numbers is

The value of $${\sqrt{40+\sqrt{9\sqrt{81}}} }$$ is

The value of $$ \sqrt{11.981+7\sqrt{1.2996}}$$ is closest to 

 If $$ x=\sqrt{(1.96)}-\sqrt{(0.04)}$$ then the value of x is

If 12x – 15 y =9x + 5y, the value of $$ {x^{2}+{y^{2}}\over{x^{2}-y^{2}}}$$ is

The value of $${4- \sqrt{0.04} \over 4+\sqrt{0.4} } $$  is closed to

2x + 4y – 8xy -1 =?

What is the value of $${0.74×1.23×0.13\over (0.37)^{3}+(0.41)^{3}-8(0.39)^{3}}$$ ?