Let's see
#1
[tex]\\ \sf\longmapsto -17.3256[/tex]
#2
[tex]\\ \sf\longmapsto -\sqrt{225}[/tex]
[tex]\\ \sf\longmapsto -15[/tex]
#3
[tex]\\ \sf\longmapsto \sqrt{27}=3\sqrt{3}[/tex]
#4
[tex]\\ \sf\longmapsto 42[/tex]