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Question -

Find two consecutivepositive integers, sum of whose squares is 365.



Answer -

Let us say, the two consecutive positiveintegers be x and x + 1.

Therefore, as per the given questions,

x2 + (x + 1)2 = 365

 xx+1 + 2x = 365

2x2 + 2x – 364 = 0

 x– 182 = 0

 x+ 14x – 13x –182 = 0

 x(x + 14) -13(x + 14)= 0

(x + 14)(x – 13) = 0

Thus, either, x + 14 = 0or x – 13 = 0,

 x = – 14 or x = 13

since, the integers arepositive, so x can be 13, only.

 x + 1 = 13 + 1 = 14

Therefore, two consecutive positive integerswill be 13 and 14.

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