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