Question

simplify
$( \sqrt{2} + 1) {}^{5} + ( \sqrt{2} - 1) {}^{5}$
​

Answer 1

Step-by-step explanation:

$( \sqrt{2} + 1) {}^{5} + ( \sqrt{2} - 1) {}^{5} \\ ( \sqrt{2} ) {}^{5} + (1) {}^{5} \\ 4 \sqrt{2} + 1 = 5 \sqrt{2}$

ok