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Phổ biến Word Problems >

The sum of the squares of 2 consecutive even integers is 20

Lời Giải

T h e s u m o f t h e s q u a res o f 2 co n sec u t i v e e v e n in t e g ers i s 20

Lời Giải

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

Các bước giải pháp

Represent the numbers with

x

:

First number : x

Consecutive number : x + 2

A.T.Q.:

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

Giải

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

Thay

x = 2 : 4

Thay

x = - 4 : - 2

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

Ví dụ phổ biến

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