anonymous
  • anonymous
3y^2+5y=2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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gw2011
  • gw2011
3y^2+5y-2=0 (3y-1)(y+2)
anonymous
  • anonymous
im confused how did you get -2 in the equation?
gw2011
  • gw2011
You subtract 2 from each side of the equation which then gives you a -2 on the left hand side of the equation and zero on the right hand side of the equation. Once you do this, you can then factor the equation.

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anonymous
  • anonymous
ooohh! okay thanks!
anonymous
  • anonymous
would the answer be y=1/3 and -2?
gw2011
  • gw2011
You're welcome. Hopefully, you understood what I did. Yes, y=1/3 and -2.
anonymous
  • anonymous
so for 4m^2 -100=0 would we do the same thing?
gw2011
  • gw2011
Basically, you would do the same thing. The factor in this problem would be: (2m-10)(2m+10) and m=5 and -5.
anonymous
  • anonymous
5x^2=40 this one were having alot of trouble on
amistre64
  • amistre64
5x^2 - 40 = 0 5(x^2-8) x=+- 2sqrt(2) ??
gw2011
  • gw2011
What you can do is to divide both sides by 5 and you get: x^2=8 x=square root of 8=+/- square root (4)(2)=+/-2(square root 2)
anonymous
  • anonymous
\[\sqrt{8} =+/-(4) (2)=+/-2\sqrt{2}\]
anonymous
  • anonymous
is that how you write it?
anonymous
  • anonymous
im so confused
anonymous
  • anonymous
im so confused
gw2011
  • gw2011
To be completely correct you should put a +/- in front of square root 8 and use the same symbol for the square roots of 4 and 2. Otherwise, you are correct. What is the confusion?

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