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i know all square root and any root(cubic......) rules

sqrt(x)=x^(1/2)

sqrt(x^2)=abs(x)

sqrt(xy)=sqrt(x)*sqrt(y)

sqrt(x/y)=sqrt(x)/sqrt(y)

sqrt(-x)=isqrt(x)

f'(x)=1/2sqrt(x)

F(x)=2/3*(x^3/2)

..............

my question is:

is there any rules for this sqrt(x+y)

or sqrd(x-y)??

any help please??

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# About square root

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