Question

Calculați :
$- 0.(6) + 0.1(6) - 0.6$
si
$2 \sqrt{24} \times ( \frac{3}{ \sqrt{6} } - \frac{ \sqrt{2} }{ \sqrt{3} } )$
​

Answer 1

Explicație pas cu pas:

0,(6)=6/9=2/3

0,1(6)=15/90=1/6

0,6=6/10=3/5

-2/3 + 1/6 - 3/5 =

(-2•10 + 1•5 - 3•6)/30 =

-33/30 =

-11/10 =

-1,1

2rad24 • ( 3/rad6 - rad2/rad3) =

rad24 : rad6 = rad4 = 2

rad24 : rad3 = rad8 = 2rad2

2 • 2rad2 • rad2 = 8

2•3•2 - 2•2•2 =

12-8 =

4