Question

find the square root of 81 by repeated subtraction method​

Answer 1

Answer:

9

Step-by-step explanation:

u need to substrat

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

Answer 2

Answer : 9

Explanation:

We will repeatadly subtract 81 by odd numbers.

81 - 1 = 80 $\qquad \qquad \qquad$ (1)

80 - 3 = 77 $\qquad \qquad \qquad$ (2)

77 - 5 = 72 $\qquad \qquad \qquad$ (3)

72 - 7 = 65 $\qquad \qquad \qquad$ (4)

65 - 9 = 56 $\qquad \qquad \qquad$ (5)

56 - 11 = 45 $\qquad \qquad \qquad$ (6)

45 - 13 = 32 $\qquad \qquad \qquad$ (7)

32 - 15 = 17 $\qquad \qquad \qquad$ (8)

17 - 17 = 0 $\qquad \qquad \qquad$ (9)

Number of steps is 9, so

Square root of 81 is 9