Question

<br /><br />$if \: a = \frac{1}{3 - \sqrt{11} } and \: b = \frac{1}{a} \: find \: a {}^{2} - b {}^{2}$<br />​

Answer 1

Answer:

Step-by-step explanation:

1/a = 3 - √11

a^2 - b^2 = 3√11 - 30