Please help me it's doing 1 minute I don't know what to do

Answer:
4.1
Step-by-step explanation:
[tex]\sqrt{(4-(-5))^{2} }+ (-5-3)x^{2}[/tex]
[tex]\sqrt{(9})^{2} +(-8)^{2} \\[/tex]
√81+(-64)
√17
4.1