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Asked by juliet

find four consecutive integers such that the sum of the squares of the first two is 11 less than the square of the fourth
14 years ago

Answers

Answered by Marth
Let x, x+1, x+2, x+3 be the four consecutive integers.

"the sum of the squares of the first two is 11 less than the square of the fourth"
x^2 + (x+1)^2 + 11 = (x+3)^2
x^2 + x^2 + 2x + 1 + 11 = x^2 + 6x + 9
2x^2 + 2x + 12 = x^2 + 6x + 9
x^2 - 4x + 3 = 0
(x-3)(x-1) = 0
x = 1, 3

So the four consecutive integers are 1, 2, 3, 4; or 3, 4, 5, 6.
14 years ago

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