Question

Simplify (X^-1 + y^-1)^-1

Answer 1

Answer:

(X^-1 + y^-1)^-1=xy/(x+y)

Step-by-step explanation:

identity:- (a)^-m=1/a^m

(x^-1+y^-1)^-1

(1/x+1/y)^-1

1/{1/x+1/y}

1/{y/xy+x/xy}

xy/(x+y)