tolong kk dijawab bsk di kumpul

1.  9/3√2 = 3/√2
2. 2√5 - 3√20 + √5 = 2√5 - 3√20 + √5 = 2√5 - 3√5*4 + √5 = 2√5 - 3√5*2*2 + √5
                              = 2√5 - 2*3√5 + √5 = 2√5 - 6√5 + √5 = -3√5

3. √8 x √6 = √48