Question

Bantu ya bro .. berbagi ilmu banyak pahala.. cuma 2 soal kok ;) udh saya kasi 20 poin

Answer 1

No 4.a^2+b^2 - 6ab
(3+√6) (3+√6) + (3-√6) (3-√6) - 6(3+√6) (3-√6)
9+3√6+3√6+6 + 9-3√6-3√6+6 - 6(9-3√6+3√6-6)
15+6√6 + 15-6√6 - 6×3
15+15-18
30-18
12