M L Aggarwal Solutions for Exercise 3: Multiple Choice Questions

If $x^2+y^2=9$ and $xy=8$, then $x+y$ is equal to

$(102{)}^2-(98{)}^2$ is equal to

$\frac{{103}^2-{97}^2}{200}$ is equal to

If$x+y=11$ and $xy=24,$ then $x^2+y^2=$

The value of ${249}^2-{248}^2$ is

If $\frac{x}{y}+\frac{y}{x}=-1 (x, y \ne 0),$ then the value of $x^3-y^3$ is

If $a+b+c=0$, then the value of $a^3+b^3+c^3$ is:

If $x-\frac{2}{x}= 3$, then $x^3-\frac{8}{x^3}$ is equal to: