Question

(v5+3v2) (3v2-v5)-(3v5) la puterea 2
V este radical pls vă rog eu cu tot cu rezolvare ​

Answer 1

$(\sqrt{5} +3\sqrt{2})(3\sqrt{2}-\sqrt{5} )-(3\sqrt{5} ) ^2$

Folosim formula diferenta de patrate

(a+b)(a-b)=a²-b²

$(3\sqrt{2} )^2-(\sqrt{5} )^2-(3\sqrt{5} )^2=\\\\18-5-45=-32$