Question

aduceti la forma cea mai simpla expresia 3 radical din 2 (2+radical din 2)-5(3,5- radical din 6)+11/(7-1,5)

Answer 1

=2(2+√2)-5(3,5-√6)+11/(7-1,5)
=4+2√2-17,5+5√6+11/5,5
=4+2√2-175/10+5√6+11*10/55
=(4-175/10+110/55)+2√2+5√6 simplific fractiile cu 2 respectiv 5
=(4-35/2+10/5)+2√2+5√6 amplific sa aduc la numitorul comun 10
=[(40-70+20)/10]+2√2+5√6
=-10/102√2+5√6
=-1+2√2+5√6