tolong jawab secepatnya

Mapel : Matematika
Materi : Akar dan Pangkat
Kelas : 9

√2 = a
√3 = b

Maka,
= √18 - √6

= [√3 x √3 x √2] - [√3 x √2]

= [b x b x a] - [ b x a]

= [ab²] - [ab]

= ab(b - 1) → Opsi A