Question

a rational number whose square is 81
pls answer this question​

Answer 1

Answer:

9×9

Step-by-step explanation:

let a rational no. be x

Its square is x^2

so,

x^2 =81

x = square root of 81

x = 9

9×9 = 81

please mark as brainalist

Answer 2

Answer:

9

Step-by-step explanation:

Let the number be x

x² = 81

x = √81

x = 9

The number is 9

Hope it helps you:)