Q1 of 83 Page 88

Find two numbers whose sum is 27 and the product is 182.

Let the two numbers be x and 27 – x so that their sum is 27


Product = 182


x(27 – x) = 182


27x – x2 = 182


x2 – 27x + 182 = 0


x2 – 14x – 13x + 182 = 0


taking x common from first two terms and – 13 common from next two


x(x – 14) – 13(x – 14) = 0


(x – 13)(x – 14) = 0


(x – 13) = 0 or (x – 14) = 0


Therefore x = 13 and x = 14


Take any value of x 13 or 14 if we subtract it from 27 we get the other value 13/14


Hence the numbers are 13 and 14 whose sum is 27 and product is 182


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