Question

Calcule:
√2 -1 x √2 + 1

Answer 1

√2=2 
2 - 1=1 
1x2=2
2+1=
3
Espero ter ajudado :) 

Answer 2

√2 -1 = 1
√2 + 1 = 1.73205080757
1 + 1.73205080757 = 2.73205080757