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Phổ biến >

One positive integer is 5 less than twice another. The sum of their squares is 325. Find the integers.

Lời Giải

One positive integer is 5 less than twice another. The sum of their squares is 325. Find the integers.

Lời Giải

The numbers : 15, 10

Các bước giải pháp

Represent the numbers with

x and y

:

number 1 : x

number 2 : y

A.T.Q.:

x = 2 y - 5

x^{2} + y^{2} = 325

Giải hệ phương trình:

x = 2 y - 5, x^{2} + y^{2} = 325 : (x = 15, x = - 17, y = 10 y = - 6)

Select positive solutions:

10, 15

The numbers : 15, 10

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