anonymous
  • anonymous
Solve x2 – 3x = –8 Answer
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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mysesshou
  • mysesshou
the square assumed \[x^2-3x=-8\] add 8 to each side of the = \[x^2-3x+8=0\] then..
mysesshou
  • mysesshou
factoring isn't simple, so you can use the quadratic equation.
mysesshou
  • mysesshou
do you know it?

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anonymous
  • anonymous
no but theres for muti choice questions want me to send them then maybe you can figure it out ? cuz i dony get at all
anonymous
  • anonymous
*four * dont
mysesshou
  • mysesshou
\[x = \frac{-b \pm \sqrt(b^2-4*a*c)}{2*a}\]
anonymous
  • anonymous
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anonymous
  • anonymous
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anonymous
  • anonymous
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anonymous
  • anonymous
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mysesshou
  • mysesshou
\[x^2−3x+8=0\] \[x=\frac{-b \pm \sqrt{b^2-4*a*c}}{2*a} = x=\frac{-(-3) \pm \sqrt{(-3)^2-4*1*8}}{2*1}\]
mysesshou
  • mysesshou
\[x=\frac{3 \pm \sqrt{9-32}}{2}\]
mysesshou
  • mysesshou
\[x=\frac{3 \pm \sqrt{-23}}{2}\]
mysesshou
  • mysesshou
Then they pulled out the \[\sqrt{-1} = i\]
mysesshou
  • mysesshou
does that help any? confused anywhere?
mysesshou
  • mysesshou
so file called choice 2 is likely it.
anonymous
  • anonymous
thank you
mysesshou
  • mysesshou
welcome !

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