[Request] Control of algebraic expressions CAS

[compsystems]

very well

but It requires placing parenthesis '()' IT IS A PROBLEM OF HISTORY VIEW?

please follow the following...

simplify maximum, '' = [()] KEY
_________________________
x^3/x^2 input returns x^3/x^2 , outpu returns x OK
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
_________________________
'x^3/x^2' returns ERROR
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

with '()'
_________________________
'(x^3/x^2)' input returns 'x^3/x^2' OK
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
also if I write quote (x^3/x^2) [enter], then under the input, to entry line also generates an error