2 - 3 akar 2 per 2 akar 2 + 4 Mohon bantuannya

Kelas 9 Matematika
Bab Akar dan Pangkat

(2 - 3√2)/(2√2 + 4)
= (2 - 3√2)/(2√2 + 4) . (2√2 - 4)/(2√2 - 4)
= (4√2 - 8 - 3 . 2 + 12√2) / (4 . 2 - 4)
= (16√2 - 8 - 6)/4
= (16√2 - 14)/4
= (8√2 - 7)/2