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受欢迎的 Word Problems >

The sum of the squares of two consecutive even integers is twenty.

解答

T h e s u m o f t h e s q u a res o f tw o co n sec u t i v e e v e n in t e g ers i s tw e n t y .

解答

The numbers : 2, 4 or - 4, - 2

求解步骤

Represent the numbers with

x

:

First number : x

Consecutive number : x + 2

A.T.Q.:

x^{2} + (x + 2)^{2} = 20

解

x^{2} + (x + 2)^{2} = 20 : x = 2, x = - 4

代入

x = 2 : 4

代入

x = - 4 : - 2

The numbers : 2, 4 or - 4, - 2

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