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Ne positive integer is 4 less than twice another. The sum of their squares is 356. Find the integers

User LarssonK
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2 Answers

5 votes

Answer:

16 and 10 is the answer.

Explanation:

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User Ozkar
by
8.5k points
4 votes

9514 1404 393

Answer:

16 and 10

Explanation:

Let x and y represent the two integers.

x = 2y -4 . . . . . one is 4 less than twice another

x^2 +y^2 = 356 . . . . the sum of their squares is 356

We can solve these using substitution.

(2y -4)^2 +y^2 = 356 . . . . substitute for x

5y^2 -16y +16 = 356 . . . . simpify

5y^2 -16y -340 = 0 . . . . . put in standard form

(5y +34)(y -10) = 0 . . . . . . factor*

y = 10 . . . . . the only positive solution

x = 2(10) -4 = 16

The integers are 16 and 10.

_____

* A graphing calculator can provide useful insight as to the factors.

Ne positive integer is 4 less than twice another. The sum of their squares is 356. Find-example-1
User BugsForBreakfast
by
8.4k points

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