Question

Explicitati modului:
a) |√19- 4|
b)|2-√10|
c)|√7-2√2|
d)|√22-3√2|

Answer 1

a)  
19 > 16 => √19 > √16 => √19 > 4 
=> |√19- 4| = √19 - 4          

b)
4 < 10 => √4 < √10 => 2 < √10 
=> |2-√10| = √10 - 2
 
c)
7 < 8  =>  √7 < √8  =>  √7 < 2√2
=>  |√7-2√2| = 2√2 - 7

d)
22 > 18  =>  √22 > √18   =>   √22 > 3√2
=> |√22-3√2| = √22 - 3√2