top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

Sum of the squares of two consecutive even positive integers is 340. What are the numbers?

0 votes
424 views
Sum of the squares of two consecutive even positive integers is 340. What are the numbers?
posted Apr 30, 2019 by Mani Shankar Katta

Share this puzzle
Facebook Share Button Twitter Share Button LinkedIn Share Button

2 Answers

0 votes

12 &14


x^2+(x+2)^2=340 ===> positive solution is x=12
numbers are 12 &14

answer May 2, 2019 by Hanifa Mammadov
0 votes

x^2+(x+2)^2=340
x^2+x^2+4x+4=340
2x^2+4x-336=0
x^2+2x-168=0
x^2+14x-12x-168
x(x+14)-129x+14=0
(x+14)(x-12)=0
x=12 or-14
x=12 as x is positive
So the numbers are 12 and 14

answer May 18, 2019 by Ram Kushwah



Similar Puzzles
0 votes

If 1^3 + 2^3 + 3^3 = m^2 where m is also an integer.
What are the next three consecutive positive integers such that the sum of their individual cubes is equal to a perfect square?

0 votes

The average of squares of five consecutive even natural numbers is 792.
What is the ratio of smallest number to largest number?

0 votes

First 17 positive integers (1..17) are rearranged into a sequence such that the sum of any two adjacent terms is a perfect square.
What is the sum of the first and last terms of this sequence?

...