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LinuxCharmd

Solve: 8x - y = -6 and xy = 9

  • one year ago
  • one year ago

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  1. 2bornot2b
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    \[x=9/y\] Putting the above value of x in the first equation \[72/y-y=-6\implies 72-y^2=-6y\implies y^2-6y-72=0\]

    • one year ago
  2. 2bornot2b
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    I hope you can solve the quadratic equation....

    • one year ago
  3. LinuxCharmd
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    So I just do the quad form and then it should give me my answer for Y?

    • one year ago
  4. LinuxCharmd
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    Awesome, thanks

    • one year ago
  5. 2bornot2b
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    Yes, you will get two values of y, by solving the above quadratic equation. Now put each of them on any one of your equations, and you will get two values of x. So that's the solution, two values of x and two values of y.

    • one year ago
  6. 2bornot2b
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    You are welcome! It also must be mentioned here, that the solutions must be written in such a way such that the reader can make out from your writing which x is corresponding to which y.

    • one year ago
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