Question

puteti sa ma ajutați​

Answer 1

Răspuns:

Explicație pas cu pas:

a)1/2√2+1/2√2-1/√2 =2/2√2-1/√2=1/√2-1/√2=0

b)=1/2+3/3√2+5/7√2×7/5=1/2+1/√2+1/√2=1/2+2/√2=1/2+√2

c)=1/√3-12/3√3√2:6/√2-1/3√3=1/√3-4/√3√2·√2/6-1/3√3=1/√3-2/3√3-1/3√3=1/√3-1/√3=0

d)=3/√2√3:1/√3+1/√2√5·√5=3/√2√3·√3+1/√2=3/√2+1/√2=4/√2=4√2/2=2√2