Number System

Fast trick to solve number system

Q . Solve √? = ( 81 * 42 ) / 89

Let ? = x so

√? = ( 81 * 42 ) / 89

√x = ( 3402 ) / 89

√x = 38.224719101124

(√x)2 = ( 38.224719101124 )2

x = 1461.1291503598

? = 1461.1291503598