Question
I. 35x² - 51x + 18 = 0 II. 30y² + 17y
– 21 = 0Solution
I. 35x² - 51x + 18 = 0 35x² - 21x - 30x + 18 = 0 7x(5x – 3) - 6(5x - 3) = 0 (7x – 6) (5x – 3) = 0 x = 6/7, 3/5 II. 30y² +17y – 21 = 0 30y² + 35y - 18y – 21 = 0 5y (6y + 7) – 3 (6y + 7) = 0 (5y – 3) (6y + 7) = 0 y = 3/5, -7/6 Hence, x ≥ y
Mirror formula is
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