# How do you simplify 3/(t-sqrt2)?

Try rationalizing by multiplying and dividing by $t + \sqrt{2}$:
$\frac{3}{t - \sqrt{2}} \cdot \frac{t + \sqrt{2}}{t + \sqrt{2}} =$
$= \frac{3 \left(t + \sqrt{2}\right)}{t - 2}$