anonymous
  • anonymous
solve the quadratic equation by using the definition of square root and write the solution in radical form.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
\[6y ^{2}=72\]
anonymous
  • anonymous
Divide by 6 and take the square root.
anonymous
  • anonymous
i'm stuck at 6y=\[\sqrt{12}\] does it turn into 1 +/- square(2)?

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anonymous
  • anonymous
You should get \[y^2=12\] when you divide both sides by 6.
anonymous
  • anonymous
ohhh oops, yep yep.
anonymous
  • anonymous
there are 2 answers though .
anonymous
  • anonymous
Yes. So then take the square root of both sides....\[y=\pm \sqrt{12}\] Take note of the +/-
anonymous
  • anonymous
right. ok thanks!
anonymous
  • anonymous
And then either leave it that way or reduce. You're welcome. :)
anonymous
  • anonymous
ohh i wonder if it will need to be reduced.. ?
anonymous
  • anonymous
it says to simplify the solution
anonymous
  • anonymous
So yes \[y=\pm \sqrt{4x3}\] where x means to multiply. Then the square root of 4 is 2 so we can bring that outside the square root symbol. Thus \[y=\pm2\sqrt{3}\]

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