Why does my calculator return error when calculating the (0+√(10000÷0))^(2) part of of f(x)=(10000)/((x+ sqrt((10000)/(0)))^(2)) (with x=0)

but 0 when calculating the whole function for f(0) (10000÷(0+√(10000÷0))^(2)).

Shouldn't it be an error too since it is basically just 10000 divided by the first term (which is Error because you can't divide by 0)?

Thanks Josh