Question

if a = 1-root 2 find the value of a + 1/a

Answer 1

Step-by-step explanation:

a=1-√2

1/a=1+√2/(1-√2)(1+√2)

=1+√2/1-(√2)^2=1+√2/1-2

=-1-√2

a+1/a=1-√2-1-√2=-2√2