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The product of two consecutive even numbers is 582168. Which is the smaller number?(a) 760 (b) 762(c) 764 (d) 766(e) 756 |
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Answer» (b) Let the numbers be x and (x + 2) Then, x × (x + 2) = 582168 x 2 + 2x – 582168 = 0 x2 + 764x – 762x – 582168 = 0 (x + 764) (x – 762) = 0 x = 762 |
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