maura2mconroy0547
maura2mconroy0547 maura2mconroy0547
  • 26-01-2017
  • Mathematics
contestada

solve the quadratic equation x^2-2x-8=0



I have tried many ways for this one but it ends up being a ridiculous answer.

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PsychrolutesMarcidus
PsychrolutesMarcidus PsychrolutesMarcidus
  • 26-01-2017
Using cross multiplication

[tex] x^{2} -2x-8 =0[/tex]
(x-4)(x+2)=0
x-4=0
x+2=0

Thus x=4,-2
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