Question

ax+bx-2
EXEF
1. Find the square root of 81 and 121 by
method of repeated subtraction.​

Answer 1

Answer:

√81=

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

Count the total steps, that is 9 , which is your square root of 81

√121=

121 - 1 = 120

120 - 3 = 117

117 - 5 = 112

112 - 7 = 105

105 - 9 = 96

96 - 11 = 85

85 - 13 = 72

72 - 15 = 57

57 - 17 = 40

40 - 19 = 21

21 - 21 = 0

Similarly count the steps and your square root of 121 is 11