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Ax+bx-2EXEF1. Find the square root of 81 and 121 bymethod of repeated subtraction. |
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Answer» 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 |
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