tlng pake jalannya :-)

bismillahirrohmanirrohim
=3√125 x 2√45
=3 x 5√5 x 2 x 3√5
=3 x 5 x 5 x 2 x 3
=450

3√125 x 2√45
= 3 × √125 x 2 × √45
= 3 × 2 × √125 × √45
= 6 × √5.625
= 6 × 75
= 450