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Question

Find two consecutive natural numbers whose squares have the sum 265.

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Solution

Let two consecutive numbers be x and x+1

Given:

x2+(x+1)2=265

x2+x2+1+2x=265

2x2+2x264=0

x2+x132=0

(x+12)(x11)=0

x=11 and x=12

Hence consecutive numbers are 11,12 or 12,11


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