Practice problem
Remove the radical from the denominator by multiplying by the conjugate: 11+2\frac{1}{1+\sqrt{2}}1+21
1−21-\sqrt{2}1−2
2−12\frac{\sqrt{2}-1}{2}22−1
2−1\sqrt{2}-12−1
21+2\frac{\sqrt{2}}{1+\sqrt{2}}1+22
Type a concept, like “slope” or “photosynthesis”.