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The sum of the squares of two consecutive positive integers is 41. Find the integers

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Answer: 16 and 25

Explanation:

Let the consecutive terms = x² + ( x + 1 )²

Since their sum = 41

we now open the bracket and equate it to 41

x² + x² + 2x + 1 = 41

2x² + 2x + 1 = 41

Re arranged and solve quadractically

2x² + 2x + 1 - 41 = 0

2x² + 2x - 40 = 0

Reduce to lowest term to easy solving by dividing by 2

x² + x - 20 = 0

solve x² + 5x - 4x - 20 = 0

x( x + 5 ) - 4( x + 5 ) = 0

consider common factors

( x + 5 )( x - 4 ) = 0

when x + 5 = 0 , x = -5 and when x - 4 = 0 , x = 4

Therefore

x = -5 or 4

The integers x² and (x + 1)²

Now substitute for the numbers

When x = -5,

(x)² = (-5)²

= 25 and when

(x + 1)² = (-5 + 1)²

= (-4)²

= 16.

When x = 4

x² = (4)²

= 16

(x + 1)²= (4 + 1)²

= 5²

= 25

So the numbers are 16 and 25

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