Question

State, with reason, of the following is surd or not : 
`root(3)(25). root(3)(40)`

Answer 1

`root(3)(25). root(3)(40) = root(3)(5 xx 5 xx 2 xx 2 xx 2 xx 5) = 2 xx 5 = 10`

∴ `root(3)(25). root(3)(40)` is not a surds.