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
9
Let the number be x
x² = 81
x = √81
The number is 9
Hope it helps you:)
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Answers & Comments
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:
9
Step-by-step explanation:
Let the number be x
x² = 81
x = √81
x = 9
The number is 9
Hope it helps you:)