Question

Find two number x,y such that| |x+y|=|x|+|y| ? What is the answer

Answer 1

there are infinite numbers for this question....

ex (1,2),(2,2), etc. like this

Answer 2

there are many cases

for an instance

take x=10

y = 11

ATQ

$|x + y \:| = | x| + |y|$

=l10+11l = l10l + l11l

= l21l= 10 +11

=21=21

hence proven

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