7√27+ 3√12 - √300 = log 42 =

7akar 9.3 + 3 akar 4.3- akar 100.3
7.3 akar 3 + 3.2 akar 3 - 10 akar 3
21 akar 3+6 akar 3-10 akar 3
(21+6-10) akar 3
17 akar 3

log 42 = 1,623

7√27 + 3√12 - √300 =

= 7 (√9 . √3) + 3 (√4 . √3) - (√100 . √3)
= (7 . 3) √3 + (3 . 2) √3 - (10) √3
= 21√3 + 6√3 - 10√3
= 27√3 - 10√3
= 17√3

(Maaf kalau salah)