Question

Solve x2=81/16
express your answer as a fraction.

Answer 1

x^2 = 81/16

x = +√(81/16) = +9/4

Answer 2

`x = 2 (1)/(4)`

Explanation:

`{x}^(2) = (81)/(16)`

`x > 0`

`x = \sqrt{ (81)/(16) }`

`x = ( √(81) )/( √(16) ) = (9)/(4) = 2 (1)/(4)`