4a-b根号下4a+3b与b+1根号下2a+b+6是同类根式4a-b=b+14a-2b=1.........(1)4a+3b=2a+b+6a+b=6......... (2)解（1）(2）a=13/6,b=23/6
二次根式有 b+1=2b=1同类二次根式有 4a+3b=2a-b+64a+3=2a-1+6a=1则 a=1 b=1
