Project ID:
7100020160
Accepted:
Typ:
Layout:
Question:
Dopasuj wyrażenia, które są równe dla wszystkich rzeczywistych, dodatnich liczb $x$.
Question 1:
$2x+|2x|$
Answer 1:
$4x$
Question 2:
$2x-|4x|$
Answer 2:
$-2x$
Question 3:
$2x-|-x|$
Answer 3:
$x$
Question 4:
$2x-|-3x|$
Answer 4:
$-x$
Question 5:
$2x-|2x|$
Answer 5:
$0$
Question 6:
$2x+|4x|$
Answer 6:
$6x$
Question 7:
$-2x+|4x|$
Answer 7:
$2x$
Question 8:
$3x+|2x|$
Answer 8:
$5x$
Question 9:
$-2x-|2x|$
Answer 9:
$-4x$