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23-10-2021
Mathematics

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a positive real number is 4 less than anther of the sum of the squares of the two numbers is 72 then find the numbers.

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Аноним Аноним

23-10-2021

Answer:

3.657 and 7.657 to the nearest thousandth.

Step-by-step explanation:

x - y = 4

x^2 + y^2 = 72

From equation 1

x = y + 4 so

(y + 4)^2 + y^2 = 72

y^2 + 8y + 16 + y^2 - 72 = 0

2y^2 + 8y - 56 = 0

y^2 + 4y - 28 = 0

y = 3.657.

so x = 7.657.

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