Question

{ ( 1/3)^-1- ( 1/4)^-1} -2​

Answer 1

Answer:

$( (\frac{1}{3} ) ^{ - 1} - (\frac{1}{4} ) ^{ - 1} )) ^{ - 2} \\ \\ ( \: \: (3) ^{1} - (4)^{1} ) ^{ - 2} \\ \\ (3 - 4) ^{ - 2} \\ \\ ({ - 1})^{ - 2} \\ \\ ( \frac{1}{ - 1} ) ^{2} \\ \\ 1$