Question
I. 99 x² + 31 x – 110 = 0 II. 6y²
- 31y + 35 = 0Solution
I. 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
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