Question

Find the square root of 81 by repeated subtraction

Answer 1

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Step-by-step explanation:

81-1=80

80-3=77

77-5=72

72-7=65

65-9=56

56-11=45

45-13=32

32-15=17

17-17=0

√81=9

Answer 2

Answer:

The square root of 81 is 9

Step-by-step explanation:

Let us find the square root of 81 by repeated subtraction method.

1. 81 - 1 = 80

2. 80 - 3 = 77

3. 77 - 5 = 72

4. 72 - 7 = 65

5. 65 - 9 = 56

6. 56 - 11 = 45

7. 45 - 13 = 32

8. 32 - 15 = 17

9. 17 - 17 = 0

Here we got the result 0 in the 9th step, so the square root of 81 is 9.

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