3√28+2√175

1).______________ =

    2√112

 

2). 7√108-√12

     __________=

     2√75

1)...=(3*2V7+2*5V7)/(2*4V7)=(6V7+10V7)/8V7=16V7/8V7=2

2)...=(7*2*3V3-2V3)/(2*5V3)=(42V3-2V3)/10V3=40V3/10V3=4