Question

1supra√3 + 1supra √12 + 1supra√27+1supra √48+ 1supra √75​

Answer 1

= 1/√3 + 1/2√3 + 1/3√3 + 1/4√3 + 1/5√3 =

(Amplifici tot cu √3)

= √3/3 + √3/6 + √3/9 + √3/12 + √3/15 =

= √3 (1/3 + 1/6 + 1/9 + 1/12 + 1/15) =

Aduc la numitor comun 180

= √3 ( (60+30+20+15+12)/180 )

= √3 ( 137 /180 )

Da urat sper ca e ok

/ inseamna impartire (linie de fractie)