Ok, Im doing my calculus homework, but sometimes I get a negative in the wrong place...(adsbygoogle = window.adsbygoogle || []).push({});

Here is an example:

The solution I got for the derivative attached is on the numerator:

5e^x(9e^x)-5e^x(4+9e^x)

In the solution, the negative sign is on the other side??

I dont get it

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# Finding Derivative, but wrong sign

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