WeBWorK Standalone Renderer

Enter "=" if the proposed identity holds, and "N" otherwise.

$(x+3)^2$ $x^2 + 9$ .

$(x+3)^2$ $x^2 + 6$ .

$\frac{x^2+9}{x+3}$ $x+3$ .

$\sqrt{x^2+9}$ $x+3$ .

In order to get credit for this problem all answers must be correct.