Question

Aduceti la forma cea mai simpla expresia: 
8√48-8√80+5√405-7√147

Answer 1

8√48-8√80+5√405-7√147=8*4√3-8*4√5+5*9√5-7*7√3=32√3-32√5+45√5-49√3=13√5-17√3