Question

Multiply (√13 – √5) by (√5 +13)​

Answer 1

Answer:

√65 + 13(√13 - √5) - 5

Step-by-step explanation:

$(\sqrt{13} - \sqrt{5})*(\sqrt{5} + 13)\\= \sqrt{13}(\sqrt{5} + 13) - \sqrt{5} (\sqrt{5} + 13)\\= \sqrt{65} + 13\sqrt{13} - 5 - 13\sqrt{5}$

Answer 2

Answer:

13√13 - 13√5 + √65 - 5