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One positive integer is 1 less than twice another. The sum of their square is 461. Find the integer

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Answer:

x = 19 and y = 10.

Explanation:

x = 2y - 1

x^2 + y^2 = 461

(2y - 1)^2 + y^2 = 461

4y^2 - 4y + 1 + y^2 = 461 5y^2 - 4y + 1 = 461

5y^2 - 4y - 460 = 0

y = (-b ± √(b^2 - 4ac)) / (2a)

For our equation, a = 5, b = -4, and c = -460. Plugging these values into the quadratic formula, we get:

y = (-(-4) ± √((-4)^2 - 4(5)(-460))) / (2(5))

y = (4 ± √(16 + 9200)) / 10

y = (4 ± √9216) / 10 y = (4 ± 96) / 10

y1 = (4 + 96) / 10 = 100 / 10 = 10

y2 = (4 - 96) / 10 = -92 / 10 = -9.2

Since we are looking for positive integers, we can ignore the negative value for y. Therefore, y = 10.

x = 2(10) - 1 = 20 - 1 = 19 So, the two positive integers that satisfy the given conditions are x = 19 and y = 10.

User Shantelle
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