Question

if a=1-√2 find (a-1/a)^3​

Answer 1

Answer:

-2√2/(1-√2)^3

Step-by-step explanation:

If a=1-√2

Then (a-1/a)^3 = ((1-√2-1)/1-√2)^3

=(-√2/1-√2)^3

=-2√2/(1-√2)^3