Question

Va rog mult !!!!!
Ajutor !!!!

Answer 1

a)√5 4/9 -√ 1 9/16 =√49/9 -√ 25/16 =7/3-5/4=(7*4-5*3)/12=(28-15)/12=13/12

b) 2(8+√18)-3(4+√8)= 2(8+3√2)-3(4+2√2)= 16+6√2-12-6√2= 4

c)√15×(2/√5+√5)-√108=2√3+5√3-6√3=√3


d) (√10×√90:√50)²-(√90-√40)²=
=(√900:50)²-(3√10-2√10)²=
=(√18)²-(√10)²=
=18-10=8