根号下3x^3除以根号下x/6
=根号下18x²
=(3√2)x
根号下4a-b+11 + 根号下1/3b-4a-3 =0
4a-b+11=0
1/3b-4a-3=0
a=1/4
b=12
(根号下b/a除以根号下1/b）乘2a根号下a/b
=√48*1/2√(1/48)
=1/2