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Question: How can I suppress simplify factoring out -1?

Question:How can I suppress simplify factoring out -1?

afante 121 Maple
student
July 27 2008
0

I am going to simplify the following formula:

sqrt(a^2*p*(1-p)*(N-n)/(n^2*(N-1)))

I wrote simplify(sqrt(a^2*p*(1-p)*(N-n)/(n^2*(N-1))),symbolic), the output was:

I*a*sqrt(p)*sqrt(-1+p)*sqrt(N-n)/(n*sqrt(N-1))

The command did a bit, but it factored -1 out, that is unexpected.

In current case, I*sqrt(-1+p)=sqrt(p-1), the I is unwanted.

How can I suppress the command factoring out the -1?

I tried other options of simplify such as size, they didn't help.
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