Question

$$: ( m + n ) ^ { - 1 } ( m ^ { - 1 } + n ^ { - 1 } ) = ( m n ) ^ { - 1 }$$

Answer

$$Pr*e*o*v*t^2*h*a$$

Solution


Use Product Rule: \({x}^{a}{x}^{b}={x}^{a+b}\).
\[Prove{t}^{2}ha\]
Regroup terms.
\[Preov{t}^{2}ha\]