Question

Evaluate : [(1/3)-¹- (1/4)-¹]-¹​

Answer 1

Step-by-step explanation:

[{ (-1/3) ²}-²]-¹

[{ 1/9}-²]-¹ (first solve small brackets)

[{ 9} ²]-¹ (Now solve curly brackets and move 9 from denominator to numerator and change the sign of exponent from - to +

[81]-¹

1/81