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If x +1/x = 17/4 then find the value of x.

User Vlo
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1 Answer

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Answer:

The possible values for x are 4 and 0.25.

Explanation:

In order to solve for "x" in the equation we first need to sum "x" and "1/x", to do that we must apply LMC as shown below:

x + 1/x = 17/4

(x² + 1)/x = 17/4

4*(x² + 1) = 17*x

4*x² + 4 = 17*x

4*x² + 4 - 17*x = 0

4*x² - 17*x + 4 = 0

x = [-(-17) + sqrt((-17)² - 4*(4)*(4))]/(2*4) = 4

x = [-(-17) - sqrt((-17)² - 4*(4)*(4))]/(2*4) = 0.25

The possible values for x are 4 and 0.25.

User Lineil
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