Question

find square root of 155 by repeated subtraction​

Answer 1

Answer:

155-1= 154

154-3= 151

151- 5= 146

146- 7 = 139

139- 9 = 130

130- 11= 119

119- 13= 106

106- 15= 91

91- 17=74

74 - 19 = 55

55 - 21 = 34

34 - 23= 11

$\sqrt{155 = 12}$

Answer 2

155-1= 154

154-3= 151

151- 5= 146

146- 7 = 139

139- 9 = 130

130- 11= 119

119- 13= 106

106- 15= 91

91- 17=74

74 - 19 = 55

55 - 21 = 34

34 - 23= 11