Question

Valoarea lui a = (4/5rad3 - 3/rad48 - 3/rad108 ) * ( - 4rad3/rad18 ) * ( rad200/3 ) URGENTTTT

Answer 1

(4/5√3 - 3/√48 - 3/√108 ) * ( - 4√3/√18 ) * ( √200/3 ) =
=(4/5√3 - 3/4√3 - 3/6√3 ) * ( - 4√3/3√2 ) * (10√2/3 ) =
=(4√3/15 - 3√3/12 - 3√3/18 ) * ( - 4√3*√2/6 ) * (10√2/3 ) =
=(4√3/15 - √3/4 - √3/6 ) * ( - 40√3/9 ) =
=(16√3-15√3-10√3)/60 ) * ( - 40√3/9 ) =
=(-9√3)/60 ) * ( - 40√3/9 ) =
=  40*3/60 =
=120/60=2