.121121112... + 545545554... = ________________ shows what important concept?
Hello, C++programmerinCali!
It took a while to get what you were saying
. . You left out a decimal point.
$\displaystyle (0.121121112...) + (0.545545554...) \:=\: \_\_\_\_$ . shows what important concept?
The two decimals are irrational numbers.
. . but their sum is $\displaystyle 0.66666... =\tfrac{2}{3}$ . . . . a rational number.
. . . that the sum of two positive irrational numbers can be rational ?