Question

$| 4-sqrt{11} | - |sqrt{11}-3.5|$

Answer 1

I hope this helps you

Answer 2

$| 4-sqrt{11} | - |sqrt{11}-3.5|=4- sqrt{11}-(-( sqrt{11} -3.5))=$$=4- sqrt{11}+ sqrt{11} -3.5=0.5$

$| 4-sqrt{11} | =4- sqrt{11}$  так как $4 textgreater sqrt{11}$
$|sqrt{11}-3.5|=-( sqrt{11}-3.5)=- sqrt{11} +3.5$   так как $sqrt{11} textless 3.5$