The sum of the squares of the two consecutive odd positive integers as 394. Find them.
Advertisement Remove all ads
Solution
Let the consecutive odd positive integers are 2x – 1 and 2x + 1
Given that the sum of the squares is 394.
⇒ (2𝑥 - 1)2 + (2𝑥 + 1)2 = 394
⇒ 4𝑥2 + 1 - 4𝑥 + 4𝑥2 + 1 + 4𝑥 = 394
⇒ 8𝑥2 + 2 = 394
⇒ 4𝑥2 = 392
⇒ 𝑥2 = 36
⇒ x = 6
As x = 6, 2x - 1 = 2 × 6 - 1 = 11
2x + 1 = 2 × 6 + 1 = 13
∴ The two consecutive odd positive numbers are 11 and 13.
Is there an error in this question or solution?
Advertisement Remove all ads
APPEARS IN
Advertisement Remove all ads
Advertisement Remove all ads