Question

Aduceti la forma ce mai simpla :
a) Radical45 + radical 61intregi si 1/4 - 11intregi radical cu 1 intreg si 1/4

Answer 1

√45+√61intregi 1/4  -11√1intreg 1/4=
=3√5+√245/4-11√5/4=(astea se scriu ca fractie sub radical)
=3√5+√245/√4-11√5/√4=(bara inseamna supra)
=3√5+7√5/2-11√5/2=
=3√5+(7√5-11√5)/2=
=3√5-4√5/2=
=3√5-2√5=
=√5