x/2+64/x=5 how to find x?

Linear, quadratic, module, parametric equations

x/2+64/x=5 how to find x?

Postby IlgarSky » Fri Sep 23, 2016 1:45 pm

x/2+64/x=5 how to find x?
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Re: x/2+64/x=5 how to find x?

Postby Guest » Mon Sep 26, 2016 1:16 am

x/2 + 64/x = 5

Multiply by 2x the both sides:

[tex]x^2 + 128 = 10x[/tex]

[tex]x^2 - 10x + 128 = 0[/tex]

[tex]D = 100 - 4\cdot128 < 0[/tex]

The equations has no solutions.
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Re: x/2+64/x=5 how to find x?

Postby vincymol » Mon Sep 25, 2017 6:33 am

X value is imaginary so this equation is no solution

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