Fie a= 8/√2 si b= √2/8. Aratati ca a/√3+√2 = √3 -√2/b.

Răspuns :

a=8/√2

a=8√2/2

a=4√2

b=√2/8

a×b=4√2×√2/8

=1

a/(√3+√2)

=(√3 -√2)/b

>>> ab=(√3+√2)(√3 -√2)

= 3-2

=1