Question

5radical3 × (radical3-2radical12) - (7+4radical20) + 7radical5 + 9
dau Coronă​

Answer 1

greu de pe comp D:

scotem parantezele

$-5\sqrt{3} *3\sqrt{3} - 7- 8\sqrt{5} + 7\sqrt{5} + 9$= [tex]-5*3*3-7-8\sqrt{5} + 7\sqrt{5} +9 \\ -45-7-8\sqrt{5} + 7\sqrt{5} +9 = -43 -\sqrt{5 } [/tex]

-43-radical de 5 este proximativ 45,23607