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Start learning 50% faster. Sign in nowI. 99 x² + 31 x – 110 = 0 I. 99 x² + 121 x - 90 x – 110 = 0 11 x(9 x + 11) – 10(9 x + 11) = 0 (11 x – 10) (9 x + 11) = 0 ∴x = 10/11 ,- 11/9 II. 6y² - 31y + 35 = 0 6y² - 10y - 21y + 35 = 0 2 y(3 y – 5) - 7 (3 y – 5) = 0 (2 y – 7) (3 y – 5) = 0 ∴y = 7/2 ,5/3 Hence, x<y
21 23 26 ? 39 51
...12 3 15 ? 153 756
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...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
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...12 23 65 ? 1239 7409
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