Question

Dau coroana vă rog ajutați mă

Answer 1

Răspuns:

Explicație pas cu pas:

a)4√2/2=2√2

b)6/3√2=2/√2=√2

c)2√3/4√5=2√15/20=√15/10

d)2√20/5×20=√20/50=2√5/50=√5/25

2

1/2(14/7√2+5/9√2):23√2/36=1/2√2(2+5/9)×36/23√2=

=1/4×23/9×36/23=1  raspuns: c

3

a)(8√2/2+12√3/3)-(60√2/3×5×2+9·3√3/27)=

=(4√2+4√3)-(2√2+√3)=4√2+4√3-2√2-√3=2√2+3√3

b) (√2/3+4√2/6)√2+(45/3√5+√5/3)√5=

√2(1/3+2/3)√2+(3√5+√5/3)√5=

=1×2+3×5+5/3=18_2/3

c)1/2(√2/2)²×2+(6×3√6/54-√6/6)²+(2√3/3-√3/3)²=

=1/2+(√6/3-√6/6)³+(√3/3)²=

=1/2+1/6+1/3=(3+1+2)/6=1