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Start learning 50% faster. Sign in nowx – 1/x = 5√2 On squaring both sides, we get (x – 1/x )2 = (5√2)2 Or, x2 + 1/ x2 - 2 = 25 X 2 Or, x2 + 1/ x2 = 50 + 2 Or, x2 + 1/ x2 = 52 On squaring both sides again, we get x4 +1/ x4 + 2 = 2704 Or, x4 +1/ x4 = 2702 So, (x4 +1/ x4) ÷ 1351= 2702 ÷ 1351 = 2
21 23 26 ? 39 51
...12 3 15 ? 153 756
...3 4.5 6.75 10.125 15.1875 22.78125 ?
...In each of the following questions the number series is given. One term of the series is denoted by x. You have to calculate of value of x and by using ...
19 20 42 129 ? 2605 .
24 ? 14 16 39 88.5
...31, 16.5, 18, ?, 60.5, 154.25
11 28 47 70 ? 130
...49 121 169 289 361 ?
...12 23 65 ? 1239 7409
...