Question

Ajutati.ma va rog din suflet!

Answer 1

$x = \sqrt{27} - \sqrt{3} + \sqrt{48} \Rightarrow x= \sqrt{3^{2}*3} - \sqrt{3} + \sqrt{4^{2}*3} \Rightarrow x=3 \sqrt{3} - \sqrt{3} + 4 \sqrt{3} = 6 \sqrt{3} \\ \\y= \sqrt{28} + \sqrt{175} - \sqrt{63} \Rightarrow y= \sqrt{2^{2}*7} + \sqrt{5^{2}*7} - \sqrt{3^{2}*7} \Rightarrow y=2 \sqrt{7} + 5 \sqrt{7} - 3 \sqrt{7} \Rightarrow y= 4 \sqrt{7}$

Answer 2

X= 3√3-√3 +4√3  ⇒ X=6√3 ⇒X=√108
Y=2√7 +5√7-3√7 ⇒ Y=4√7 ⇒Y=√112
⇒Y >X