Question

can someone please help me asap, thank youu!!!

Answer 1

Answer:

2

Step-by-step explanation:

Apply Difference of Two Squares formula: $\left(a+b\right)\left(a-b\right)=a^2-b^2$:

$\implies (3+\sqrt{7} )(3-\sqrt{7} )=3^2-(\sqrt{7} )^2$

                                   $=9 - 7$

                                   $=2$