please slove this: d/dx x/(1-x)​2

d/dx x/(1-x)​2

The natural thing to do is to use the quotient rule for derivatives. Please try that, and show us your result.

An alternative is to rewrite the function as x(1-x)​-2 and use the product rule.

If you don't know either the quotient or product rule, look them up, and then tell us what you have learned.
 
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