Question

关于二次根式乘除法的填空题

(1)计算：-√2b/a·√a/18ab=______ (2)化简：√a/12=______
(3)化简：6√48=______

Answer 1

(1)计算：-√2b/a·√a/18ab=__-√a/3a____

(2)化简：√a/12=___√3a/6___

(3)化简：6√48=_24_√3___

Answer 2

1.-√2b/a·√a/18ab=-√2b/a·a/18ab=-√(2ab)/(a·18ab)=-√1/9a^2=-1/3a(a,b不为0)
2.√a/12=√a/(4x3)=1/2√a/3
3.6√48=6√16x3=24√3