kk tolong dijawab pake jalan pliss bgt kk bsk mau dikumpul

1)     9            3√2            9(3√2)
    --------- x ---------   =  ----------------
       3√2        3√2        3 x 3 x √2 x √2

                                        9(3√2)
                                = -----------------
                                         9 x 2

                                =  3/2 √2

2) 2√5 - 3√20 + √5 = 2√5 - 3√(4x5) + √5
                               = 2√5 - 2.3√5 + √5
                               = 2√5 - 6√5 + √5
                               = - 3√5

3) 3√8 x √6  =  3√48
                    =  3√(16 x 3)
                    =  3.4 √3
                    =  12√3

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