Answers

2016-07-14T22:31:29+08:00
18xy⁴
this good answer happy :)

1 5 1
2016-07-15T02:42:00+08:00
Using the formula       nth =  arⁿ-¹         /   r = common ratio
   we have
                      16xy⁴ =   2xyr⁴-¹   =  2xyr³

                       16xy⁴/2xy   =   r³

                         8y³    =   r³
                         2y     =   r        /  take the cube rt of both sides

    so the two GM are   ( 2xy)2y  =     4xy²      &     (4xy²)(2y)   =   8xy³
   
0