I. 2x² - 12 x + 16 = 0 2x² - 8x - 4x + 16 = 0 2 x (x – 4) – 4 ( x – 4 ) (2 x – 4 ) (x – 4) x = 4, 2 II. 4y² - 8 y - 12 = 0 4y² - 12y + 4 y - 12 = 0 4 y (y – 3) + 4 ( y – 3 ) (4y + 4 ) (y – 3) y = - 1, 3 Hence relationship between x and y cannot be established.
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Two pipes A and B can fill a tank in 15 hours and 25 hours respectively. If both the pipes are opened simultaneously, in how much time the tank will be ...
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